Definition of guerrilla
- guerrilla Noun A non-official war carried out by small independent groups; a guerrilla war.
- guerrilla Noun A soldier in a small independent group, fighting against the government or regular forces by surprise raids.
- guerrilla Adjective Relating to, using, or typical of guerrilla warfare, or its principles of small independent or non-official perpetrators.
- guerrilla Adjective Relating to, using, or typical of guerrilla marketing.