Definition of ninjas:
(n) :
(figurative) A person considered similarly skillful to the historical ninja, especially in covert or stealthy operation.
(n) :
(video games, fandom slang, in the plural) A notional draconian arm of a corporation (originally Nintendo), tasked with dealing with individuals that infringe on its rights or do not comply with its regulations.
(n) :
(euphemistic, African-American Vernacular) Synonym of nigga as a friendly term of address.
(n) :
(Juggalo slang) Synonym of man as a friendly term of address.
(n) :
(euphemistic, vulgar, derogatory, offensive, ethnic slur) nigger.
(adj) :
Of or related to ninjas in their various senses.