1A small pouch built into clothing or a bag for holding small items; also used figuratively for a small, enclosed space or area.
財布を上着の内側のポケットにしまった。
I put my wallet in the inside pocket of my jacket.
このズボンは前ポケットが浅くて、スマホがすぐ落ちそうになる。
These pants have shallow front pockets, so my phone almost falls out.
寒い日は手をポケットに入れて歩く人が多い。
On cold days, many people walk with their hands in their pockets.
彼はいつも名刺をシャツの胸ポケットに入れている。
He always keeps his business cards in his shirt's breast pocket.