definition of
IRA

[1] #1 IRA n. [Irish Republican Army, Provisional Irish Republican Army, Provisional IRA, Provos] a militant organization of Irish nationalists who used terrorism and guerilla warfare in an effort to drive British forces from Northern Ireland and achieve a united independent Ireland. wn

[2] #2 IRA n. [individual retirement account] a retirement plan that allows you to contribute a limited yearly sum toward your retirement; taxes on the interest earned in the account are deferred. wn

[3] #3 IRA n. [wrath, anger, ire, ira] belligerence aroused by a real or supposed wrong (personified as one of the deadly sins). wn