Kept on the farm

• Kept in a pen
• In a piggery
• Pent up in a pigpen
• Confined to a pen
• Confined to a pig pen
• Penned, as pigs
• Put in a pen
• Penned, as a pig

Wiktionary Word definitions in Wiktionary
vb. (en-paststy)

WordNet Word definitions in WordNet
See sty