1792, from pig (n.) + -ish. Until 20c. usually "stubborn, selfish; unclean, coarse;" association with greedy eating is more recent. Related: Piggishly; piggishness.
英英释意
1. resembling swine; coarsely gluttonous or greedy;
"piggish table manners"
"the piggy fat-cheeked little boy and his porcine pot-bellied father"
