1. the clandestine military wing of the Jewish leadership during the British rule over the mandate of Palestine from 1920 to 1948; became the basis for the Israeli defense force;
WordNet (r) 3.0 (2006):
Haganah
n 1: the clandestine military wing of the Jewish leadership
during the British rule over the mandate of Palestine from
1920 to 1948; became the basis for the Israeli defense
force