1. To physically conceal someone or something in some thing or place so as to avoid detection. In this usage, a noun or pronoun can be used between "hide" and "in." Hide Susie in the bathroom and tell her to jump out and yell "Surprise!" when Mom gets here. A: "It is true that Paul's hiding an engagement ring in his sock drawer?" B: "Yeah, and his would-be fiancée already found it!"

2. To physically conceal oneself in some thing or place so as to avoid detection. Susie's hiding in the bathroom until Mom gets home—then, she's going to jump out and yell "Surprise!" Apparently, all the shrieking was because Lily found crickets hiding in the laundry basket.