What is the meaning of Clutter?

A confused disordered jumble of things.

Background echoes, from clouds etc., on a radar or sonar screen.

Alternative form of clowder (collective noun for cats).

Clatter; confused noise.

A Sperner system.

To fill something with clutter.

To clot or coagulate, like blood.

To make a confused noise; to bustle.

To utter words hurriedly, especially (but not exclusively) as a speech disorder (compare cluttering).

Source: wiktionary.org