Dictionary:

brattle

  (brăt'l) Scots.

1. A rattling or clattering sound.
2. A movement that produces such a sound.

To make a rattling or clattering sound, especially by rushing or scampering.

[Imitative .]

verb

To make or cause to make a succession of short, sharp sounds: chatter, clack, clatter, rattle. See sounds/pleasant sounds/unpleasant sounds/neutral sounds or silence.

The verb has one meaning:

Meaning #1: make a rattling sound
  Synonyms: clatter, clack