When someone uses a needlessly complicated or esoteric word when a simpler word or expression would suffice.
A common occurence amongst neophyte academics who wish to impress peers.
Why did you say "lacuna" to just say that he had a "break" or "opening" in his schedule? That was a needless vocabularical bitch slap.
A word used to purposefully end or redirect a conversation or train of thought. It is usually deployed in uncomfortable situations against someone who is known to have a more limited vocabulary.
Joey dropped a vocabularity on his high school drop out mom. He made her think his sister was having a crisis of sexuality by telling her she wanted to be a thespian.
another term for a station wagon, mini-van, or any other kind of vehicle that is targeted at the "family" demographic(also M.A.V.)
"Tactical advantages aside, the M.A.V. is top of the line for the holy warrior troop transport manufactured by the Church of Latter Day Saints Military Industrial Complex. Also great for family trips...to heathen lands."
12 step recovery jargon referring to someone new who talks about how great life is, now that they'resober. Usually meaning that the person is out of touch with reality.
The new guy seems pretty happy for a dude who has no job, no money and no family. He must be on a pink cloud.