(music) Singing solely or mainly without instrumental accompaniment. / (music, US) Related to a form of purely vocal music mostly associated with American college performance groups.

(US, military, slang, vulgar) Chipped beef on toast.

A move in square dancing in which two dancers face each other, then step forward and left until they have right shoulders adjacent, then move to a position where they are back to back, then move to have left shoulders adjacent, then return to facing each other.

Back to back.

(vulgar) Energetic but useless action, or a person engaged in such action.

A traditional greeting for Christmas and the new year.

(television, film) The primary footage for non-narrative or interview-based film, usually involving talking heads or footage that directly relates to the moment.

(idiomatic, nautical) About to be married.

something suggestive of general welfare or prosperity

(idiomatic) To be sold at a very low price.