What does "clutter" mean?

Clutter: Clatter; confused noise. Swift.

Additional senses

  1. 2.To crowd together in disorder; to fill or cover with things in disorder; to throw into disorder; to disarrange; as, to clutter a room.
  2. 3.To make a confused noise; to bustle. It [the goose] cluttered here, it chuckled there. Tennyson.
  3. 4.To clot or coagulate, as blood. [Obs.] Holland.

Sources