Cage

(Heb. kelub', Jer. 5:27, marg. "coop;" rendered "basket" in Amos 8:1), a basket of wicker-work in which birds were placed after being caught. In Rev. 18:2 it is the rendering of the Greek phulake , properly a prison or place of confinement.

Source: Easton’s Bible Dictionary (M.G. Easton, 1897, public domain).