Answer: ftlb

AnswerCrossword Clue
FTLBWork meas.
FTLBUnit slightly larger than a joule: abbr.
FTLBUnit of work: Abbr.
FTLBWork unit: Abbr.
FTLBWork unit abbr.
FTLBWork unit in the Eng. system
FTLBUnit of energy: Abbr.