MIRV

noun pl. MIRV's

1. an intercontinental ballistic missile with several warheads, each of which can be directed to a different target or to the same target at intervals
2. any such warhead

Etymology: m(ultiple) i(ndependently targeted) r(eentry) v(ehicle)

transitive verb MIRVed, MIRV′·ing

to load (a missile) with such warheads