guer·ril·la or gue·ril·la (gə-rĭlə)
A member of an irregular, usually indigenous military or paramilitary force operating in small bands in occupied territory to harass and undermine the enemy, as by surprise raids.
1. Of or relating to guerrillas or their tactics.
2. Using unconventional and usually inexpensive means to generate interest or raise concern among the public, as in commercial marketing or social activism.
[Spanish, raiding party, guerrilla force, diminutive of guerra, war, of Germanic origin; see wers- in the Appendix of Indo-European roots.]
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