flop · verb, noun, interjection, adverb1
Recorded since 1602, probably a variant of flap with a duller, heavier sound.
flop · noun2
A variant capitalization of FLOP, a syllabic acronym of floating-point operations.
FLOP · noun3
A syllabic acronym from floating-point operation.
Etymology from Wiktionary, CC BY-SA 4.0.