A vertical pipe that provides ventilation to a building's drainage system

(slang) To sleep; to be asleep.

(transitive) To put into a stack. / (intransitive) to pile up; to accumulate. / (idiomatic, transitive) To put a group of abstract things together.

(poker slang, of two or more players) To play an all in pot; to commit all of one's chips to a pot.

(Australian politics) The recruitment of members for a branch of a political party in order to influence the outcome of internal preselections of candidates for public office.

An amplifier set consisting of an amp head and a cabinet.

The use of double or stacked modals (or, rarely, triple modals), a phenomenon found in some dialects of English, especially Southern US English.

(rare, grammar) A double modal (or, rarely, any string of multiple modals, e.g. a triple modal).

A covering or protection for a haystack, such as a canvas.

plural of stack-guard