Definitions:
a sudden powerful forward or upward movement, especially by a crowd or by a natural force such as the tide

a sudden large increase, typically a temporary one

a powerful rush of an emotion or feeling

a major deployment of military forces to reinforce those already in a particular area.

(of a crowd or a natural force) move suddenly and powerfully forward or upward

increase suddenly and powerfully

(of an emotion or feeling) affect someone powerfully and suddenly

(of a rope, chain, or windlass) slip back with a jerk.