fall off

/F AO1 L AO1 F/
verb
  1. 1

    To become detached or to drop from.

    โ€œA button fell off my coat.โ€

  2. 2

    To diminish in size, value, etc.

    โ€œBusiness always falls off in the winter.โ€

  3. 3

    To change the direction of the sail so as to point in a direction that is more down wind; to bring the bow leeward.

Source: https://en.wiktionary.org/wiki/fall%20off