This page provides all possible meanings and translations of the word FLAB
Princeton's WordNetRate this definition:(0.00 / 0 votes)
loose or flaccid body fat
WiktionaryRate this definition:(0.00 / 0 votes)
Soft, loose flesh on a person's body; fat.
A FLAB is an abbreviation using four letters. It is an abbreviation of Four Letter ABbreviation. It extends the self-referential humour of the TLA.
A similar humorous abbreviation is ETLA, for Extended Three-Letter Abbreviation.