(As always, our language has it's limits...so mileage may vary!)

Old-school, or classic butch-femme--- Refers historically to the well-documented Butch-Femme community that organized in the 50's. Can also refer to modern day Butches and Femmes who appreciate an/or emulate many of the values from an era when the roles in our community were more clearly defined.
Power Femme--- Femme who revels in the power, strength, and mystique of her femininity.
Femme top, Femme bottom, Butch top, or Butch bottom--- Didja think all S/M Femmes were bottoms? A Butch bottom might express masculinity and strength through endurance, while a Femme top might express her power through femininity.
Stud And Lady--- Old school term for Butch-Femme. Usage is still prevalent in Black lesbian culture.
High Femme--- Exhibits hyper-femininity which may manifest itself outwardly in appearance, and inwardly as a a celebration of femininity.
Packing---Butch wearing a "cock" under clothing. This could be a silicone or rubber model readily used for fucking, or a realistically flaccid prothesis which can either be purchased or home-made.
Daddy, grrl, or daddy/grrl--- Dynamic in some butch-femme relationships where the Butch takes over the parental or care-taking role, either 24-7, or as occasional age play. Sexually, Daddy/Grrl can be played out in a incestous or S/M fashion where Daddy is irresponsibly "wicked", or Daddy might be emotionally responsible for nurturing and loving the grrl. This particular dynamic can allow Femmes to freely explore being bratty, playful, independent, innocent, or submissive, etc... and perhaps in some instances, both partners can confront issues surrounding abuse.
Mommy/Boy--- Rarely discussed dynamic which exists in some Butch-Femme relationships where the Femme takes on the parental role, either 24-7, or as occasional age play. The Mommy may be loving, or in an S/M context, very demanding. This dynamic an allow the Butch to be adored or punished, be child-like, innocent, boyishly devilish, or rebellious, ect.
Stone Femme--- Can define a Femme who is sexually untouchable, a Femme who is "very" femme, a Femme top, or a Femme who is partnered with or attracted to very masculine/stone Butches. "Stone Femme" iis spelled with two words. Online usage often runs the words together because early majordomo-based mailing lists required one word titles.
Stone Butch--- Usually means a hard Butch who prefers not to be touched by a partner sexually at all, or in any way that is feminizing. Stone can also mean "very", as in "very butch" and proud of it. "Stone Butch" is spelled with two words.
Kiki---A somewhat outdated term for a Butch/Femme switch.
Polyamorous--- Having pre-negotiated relationships with multiple partners. The opposite of monogamy.
FTM, F2M, or TS--- Female to Male transexual. The transition usually involves taking male hormones, sometimes includes top surgery, but doesn't always indicate bottom surgery. Many feel bottom surgery for F2Ms at this time is not a completely successful resolution. Some Butches may take testosterone and have top surgery, yet don't consider themselves transexual, or even male-identified.
TG---Transgendered. Many believe that Butches transgress the gender of "woman" or blur traditional gender to such a degree that they are transgendered. Others believe Butch is clearly a gender of it's own.
Hir, hym, s/he--- Various masculine pronouns for Butches. Sometimes Butches online will also call one another "bro" or use traditional male pronouns, much in the same way that queens call one another "she". Such bending of our limited language isn't always politically motivated, but often the practice is simply employed as a tidy way of differentiating between the Butches and Femmes online.
Het queer--- Controversial phrase used to describe how the power dynamics and polarity of B-F sexuality are closer to heterosexuality than homosexuality.
Fag Butch--- Butch into other butches or FTMs; not usually meant as a derogatory term, although some old-school butches may express discomfort with Butch-on-Butch sexuality.
Lipstick lesbian---Media term used to describe feminine lesbians, not normally used to indicate Femmes.
Fem---Variation of Femme.
Andro dyke--- Mainstrream lesbian style that is deliberately void of either masculinity or femininity, or an androgenous combination of both gender expressions, each crossing the other out. Androgeny can find roots in politics, having originated from feminist beliefs of the 70's.
Inner faggot--- Humorous way to explain a dandy Butch who is fastiduous about style, or a Butch who (although masculine) exhibits other traits common to gay boy, such as a love of theatre or a flair for design.
Baby Butch or baby Femme--- Newly-out Butch or Femme, not always related to age.
Binary gender system--- Concept that there are two genders: man and woman. Many believe that Butch and Femme disprove the concept of a binary gender system. Some Butches and Femmes claim rights to a third gender.
Saturday night Butch--- Expression used to describe lesbians who only "butch-out" at the bar on weekends.
Biology vs. Destiny--- Very topical issue in Butch-femme discussion groups. It's important to distinguish between sex (male/female), gender identity (butch/femme/man/woman/queen, etc), and gender expression (masculine/feminine). Since these three things aren't dependent and each other, the safest way to navigate is to assume nothing!

If you have any terms to add, email Daddy Rhon the Cherub!