Slats

[Zipporah Schumaker]

Small [aerodynamic] surfaces on the leading edge of an airplane wing which, when deployed, allow [the wing] to operate at a higher [angle of attack].
Pussy lips. By analogy to calling them flaps. See? flaps... slats... Now... flaps everybody understands, but slats?... Gimme a break!... Please dont call your girlfriends pussy lips slats if you dont want to sound awfully nerdy, or unless you both work at Lockheed-Martin.

[Sonia]

a thin, narrow piece of wood, plastic, or metal used to make floors, furniture, window coverings, etc.: