shill /ʃɪl/noun 4verb 3forms 3 noun4 •A person paid to endorse a product while pretending to be impartial.Witnesses have testified that Jim Jones (like a few other professional faith-healers) used shills part of the time […] — 1983 •(disapproving) Any person enthusiastically endorsing a product; especially, one who is getting paid for the endorsement.On the screen, there was that quack again, playing the shill for yet another drug company. •An accomplice at a confidence trick during an auction or gambling game, such as an accomplice of the seller who bids to drive up the price.Sniping is necessary because if you bid before the last minute it just gives the shills more time to screw you over. •A house player in a casino.There may even be a casino shill sitting adjacent to you. Normally, the casino shills are gorgeous women, and sometimes men, so enjoy the scenery. — 2000 verb3 •To promote or endorse in return for payment, especially dishonestly; sometimes extended sarcastically even to those not paid but strongly biased in favor.That contractor seems to be shilling for a certain brand of building materials.That contractor seems to be shilling that specific epoxy. •To put under cover; to sheal. •(dialect, no longer used) To shell. formsshilled · shilling · shills