Definition of fella:
(n) :
(Australian Aboriginal) Used as a general intensifier; a pfella.
(n) :
(Internet slang) An Internet troll engaged in information warfare against Russia, especially in regards to the Russo-Ukrainian war.
(n) :
A surname.
(n) :
A female given name.
(n) :
Pronunciation spelling of fellow. [(chiefly in the plural, also figuratively) A companion; a comrade.]