Third-person singular simple present indicative form of catch someone with a hand in the cookie jar

(idiomatic) To sleep.

(trading) To buy an instrument whose price is falling rapidly. / (trading) To buy an instrument with the unconfirmed assumption that price will reverse.

Alternative form of catch some z's

(idiomatic) (Extreme sports) Superlative of catch air; make a big jump high off the ground

(idiomatic) To capture someone's attention.

present participle of catch some zs

to take a break, or rest while doing a strenuous activity, so that one's breathing becomes easier / to take in a breath sharply and hold it, usually in reaction to a sudden shock, or surprise

(also sports, games) In a losing scenario, to take risks in an attempt to regain the lead.

(informal, idiomatic) To take advantage of someone's inattention.