malthorse, malt-horse (n./adj.)
heavy brewer's horse; so: drudge, idiot
CE III.i.32[Dromio of Syracuse to Dromio of Ephesus] Mome, malthorse, capon, coxcomb, idiot, patch
TS IV.i.115[Petruchio to Grumio] you whoreson malt-horse drudge!
SHAKESPEARE'S WORDS © 2018 DAVID CRYSTAL & BEN CRYSTAL