As nouns the difference between lab and flab
is that lab is (astronomy|galaxy) lyman-alpha blob while flab is (informal) soft, loose flesh on a person's body; fat.
lab
English
Etymology 1
Noun
(
en noun)
(colloquial) A laboratory
(colloquial) A Labrador retriever
Derived terms
* lab rat
Etymology 2
Noun
(
en noun)
(obsolete) A telltale; a blabber.
- (Chaucer)
Anagrams
*
*
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flab
English
Noun
(-)
(informal) Soft, loose flesh on a person's body; fat.