Ag*gres"sion (?), n. [L. aggressio,
fr. aggredi: cf. F. agression.] The first attack, or act
of hostility; the first act of injury, or first act leading to a war or a
controversy; unprovoked attack; assault; as, a war of aggression.
"Aggressions of power." Hallam
Syn. -- Attack; offense; intrusion; provocation.