jemmy noun 3adjective 1verb 1forms 5 noun3 •(Australia, slang) An immigrant. •(slang, no longer used) A greatcoat. •(slang, no longer used) A sheep's head used as food. adjective1 •(no longer used) Neat; elegant.I was agreeably surprised by seeing my young friend and companion, Robert Pott, driving up the avenue in a very jemmy equipage. — 1808 verb1 •To shoehorn, to cram.two thousand people jemmied into a stadium built for fifteen hundred formsjemmied · jemmying · jemmies · jemmier · jemmiest