verb

confine in a small space.

being cooped up indoors all day makes him fidgety

confine,shut in,close in,shut up,mew up,keep,detain,trap,lock up,imprison,incarcerate,immure,intern,impound,hold captive,hold prisoner,put under lock and key,cage,cage in,pen in,fence in,rail in,wall in,hem in,enclose