To fall on Meaning, Definition & Usage

Definitions
  1. . (a) To meet with; to light upon; as, we have fallen on evil days. (b) To begin suddenly and eagerly. "Fall on, and try the appetite to eat." Dryden. (c) To begin an attack; to assault; to assail. "Fall on, fall on, and hear him not." Dryden. (d) To drop on; to descend on.

Webster 1913