"a pig pen, a sty for pigs," 1590s, from pig (n.1) + sty (n.1). Figurative use for "miserable, dirty hovel" is attested from 1820. An older word was pighouse (late 15c.).
pigmy
pigpen
pigskin
pigsney
pig-sticker
pigsty
pigtail
pika
pike
pikeman
piker
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