Entry 2 senses · 2 variants Webster, 1913 Coigne /(koin)/ · IPA n. n. 01 n. A quoin. 1. A quoin. “See you yound coigne of the Capitol? yon corner stone?” — Shak. 02 n. The practice of quartering one's self as landlord on a tenant; a quartering of one's self on anybody. 1. The practice of quartering one's self as landlord on a tenant; a quartering of one's self on anybody.[Ireland]