1. (US) the head.
|Hand-made Fables 45: He got it into the Acorn that each Tract of Ground [...] was operated as a Gift Enterprise.|
2. (US gay) the glans penis.
|Queens’ Vernacular 104: glans penis; the acorn-like bulb forming the uppermost end of the penis [...] acorn.|
|Dict. of Obscenity etc.|
SE in slang uses
(US) of humans and animals, a runt, a weakling.
|Dict. Amer. Sl.|
|Down in the Holler 222: acorn calf: n. A runt, a poor specimen, a weakling. Applied to human beings as well as to cattle.|
1. (US) an uncouth rural person.
|DN III:i 68: acorn-cracker, n. Uncouth countryman.‘Words from Northwest Arkansas’ in|
|Amer. Thes. Sl. §391.3: Rustic; Bumpkin, Acorn cracker.|
2. attrib. use of sense 1.
|film review at www.imdb.com [Internet] The acorn-cracker Humour on the one side balance [sic] with the hard life-deal of breezy Villagers on the second side.|