n.
Variant: or gue · ril · la
Pronunciation: g ə - ' ri-l ə , ge-, g(y)i-
Function: noun
Etymology: Spanish guerrilla, from diminutive of guerra war, of Germanic origin; akin to Old High German werra strife ― more at WAR
Date: 1809
: a person who engages in irregular warfare especially as a member of an independent unit carrying out harassment and sabotage