moil (n.) Look up moil at Dictionary.com
"toil, labor," 1612, from moil (v.).
moil (v.) Look up moil at Dictionary.com
"to labour in the mire" [Johnson], c. 1400, from Old French moillier "to wet, moisten" (12c., Modern French mouiller), from Vulgar Latin *molliare, from Latin mollis "soft," from PIE root *mel- (1) "soft." Related: Moiled; moiling.