What is the meaning of Fella?

Pronunciation spelling of fellow.

Used as a general intensifier; a pfella.

An Internet troll engaged in information warfare against Russia.

to fell

to snare

to fell, to shed

to kill in battle

to fit together

to pleat

to hit (pins)

second-person singular present active imperative of fēllō

definite feminine singular of felle

to fell, bring down (make something fall, e.g. an animal, a tree, an opponent in battle)

to shed (e.g. a person shedding tears, a tree shedding leaves)

alternative form of felle

definite singular of felle

Source: wiktionary.org