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.
At a greater intelligence of vocabulary. To be vocabullarically inclined you must have a greater knowledge of vocab then peers and the people around you.
A tight, tangled knot of loose hair and lint that forms inside clothing during the clothes dryer cycle. It typically hides inside garments, causing an annoying lump or a phantom tickling sensation against the skin until it is found or falls out onto the floor during folding.
I was folding my clothes and a huge hair spider fell out onto my hand