A is for Attack Cruiser, a class of combat vessel in some fleets and space forces. The Vor'cha-class attack cruiser was a Klingon example.
B is for Baroner. Pseudonym used by Jim Kirk on Organia.
C is for Commodore, a rank that fell out of favor in Starfleet by the 24th century.
D is for Dunsel.
E is for Earth Colonies. There were a nice handful out in space by the time the NX program was launched and the first Enterprise was commissioned.
F is for Federation Funny Farm.
G is for Gorn uniforms. They were minimal....and kind of amusing.
H is for Hindu Festival of Lights. Celebrated aboard the Enterprise in the 24th C.
I is for Ill-Advised. Will Decker thought pressing deeper into the V'Ger cloud was ill-advised, but Kirk overrode him.
J is for the Jupiter 8. Featured in an automoblie commercial being broadcast from an Earth-parallel planet from "Bread and Circuses".
K is for Klingon bastard!
L is for LCARS. The magical computer system of the Enterprise.
M is for Melakon, the real power behind the throne on planet Ekos.
N is for the NX-01. The first starship named Enterprise.