piece of cake

A thing considered as a unit or an element of a larger thing, quantity, or class; a portion: a piece of string.

A portion or part that has been separated from a whole: a piece of cake.

An object that is one member of a group or class: a piece of furniture.

An artistic, musical, or literary work or composition: "They are lively and well-plotted pieces, both in prose" (Tucker Brooke).

An instance; a specimen: a piece of sheer folly.

A declaration of one's opinions or findings: speak one's piece.

A coin: a ten-cent piece.

Games

1. One of the counters or figures used in playing various board games.

2. Any one of the chess figures other than a pawn.

Slang A firearm, especially a rifle.

Informal A given distance: "There was farm country down the road on the right a piece" (James Agee).

Vulgar Slang A sexually attractive person.

To mend by adding pieces or a piece to.

To join or unite the pieces of: He pieced together the vase. She pieced together an account of what had gone on during the stormy meeting.