Green’s Dictionary of Slang

sew v.

[the movements of the needle and of the body or hand]

1. (also sew up) to have sexual intercourse; thus sewing n.

[UK]‘The Cotton Balls’ in Randy Songster in Spedding & Watt (eds) I 201: She felt his needle with delight, / He used it with such power! / She made him work with all his might, / For very near an hour! [...] Why don’t you still keep sewing, dove? / Young Susan to him said, / Said he, I’d freely do so, love, / But I’ve used all my thread .
[UK]Farmer Vocabula Amatoria (1966) 79: Coudre. To copulate; ‘to sew up’.
[US]in E. Cray Erotic Muse (1992) 407: I took down my pants and I crawled in between, / And I started to sew on her sewing machine. / I sewed and I sewed until crack of dawn.
[US](con. late 19C) C. Jeffords Shady Ladies of the Old West [Internet] Some apparently listed themselves as seamstresses, milliners, or laundresses [...] and the association eventually became so notorious that newspapers used ‘fine sewing’ as a euphemism for prostitution.

2. (US black/gay) to masturbate.

[US]B. Rodgers Queens’ Vernacular 115: to masturbate [...] sew (’40s).
[SA]K. Cage Gayle 88/1: plain sewing v. 1. masturbate 2. have anal intercourse.

3. see sew up v. (7)

4. see sew up v. (10)

In phrases

sew someone’s sees (v.)

see under see n.

sew up (v.)

see separate entry.