mix-inn.
Origin: Formed within English, by conversion. Etymon: to mix in at mix v. Phrasal verbs.
Etymology: < to mix in at mix v. Phrasal verbs. Compare earlier mix-up n. 1.
U.S. colloquial.
rare.
1912 R. A. Wason xxi. 212 An' what he's achin' for now is a mix-in with the Cross brand outfit.
This entry has been updated (OED Third Edition, September 2002; most recently modified version published online March 2022).