cinnamon squash n [Prob folk-etym for cimnin, simnin (at cymling n) ]
= cymling n 1.
1876 Daily Bee (Sacramento CA) 27 Sept [3]/2, The rind was found to be a little hard and so a cleaver was used with good effect by one of the stalwart guests. When the thing was opened all were very much disgusted at finding it only simply a cinnamon squash. 1918 Ft. Scott Daily Tribune & Ft. Scott Daily Monitor (KS) 2 Aug [5]/5, [Advt:] White Cinnamon Squash, each 10c. 1948 Moberly Monitor–Index & Moberly Eve. Democrat (MO) 15 July 8/1, [Advt:] Cinnamon Squash lb. 7c. 1966–68 DARE (Qu. I23, . . Kinds of squash) Infs MD12, NC15, Cinnamon squash. 1968 DARE FW Addit MD13, [ˈsɪnmən]—used for a round, pale green vegetable called summer squash by the FW. I think this is a variant of cymling which I later heard people use in the area.