(figuratively) Something or someone that can change things in unanticipated ways; a wildcard.

(theater) A set of flats stored together for use in a particular scene.

plural of scene pack

plural of cold pack

Synonym of pack a punch

plural of battery pack

(electronics) A set of batteries or battery cells connected together to deliver a certain voltage, capacity, or power density, often with an integrated battery management system.

(New Zealand, colloquial) To break down, to stop working. / (New Zealand, colloquial) To be negative or depressed.

Third-person singular simple present indicative form of pack a sad

simple past tense and past participle of pack a sad