Green’s Dictionary of Slang

shuttle n.

the penis.

1670–80		‘The Merry Weaver and the Chambermaid’ in Ebsworth Roxburghe Ballads (1891) VII:2 536: So I put my shuttle in her hand, / and bid her use it at her command.
1674–9		‘Hey, Ho, for a Husband’ in Pepys Ballads (1987) IV 9: If that a weaver I should have / A Loom I can provide him / And if his Shuttle it be good / Ile often stay beside him.
1719		in D’Urfey Pills to Purge Melancholy IV 62: O the Weaver the wicked, wicked Weaver, / That follows a weary Trade; / He never shoots his shuttle right, / But he shoots, but he shoots, but he shoots first at his Maid.
1795		‘Shale’s Rambles’ in A. Carpenter Verse in Eng. in 18C Ireland (1998) 504: My bore-staff’s long, both stiff and strong, my shuttle still in order.
c.1804		‘McClure’s Ramble’ in A. Carpenter Verse in Eng. in 18C Ireland (1998) 502: I’d have you tarry and work out the piece in the loom / [...] / Come lay me your shuttle to keep me in mind of the trade.
1821		Tom Shuttle and Blousalinda [title].

SE in slang uses

In compounds

shuttle-headed (adj.) (also shuttle-witted)

(US) garrulous.

1636		‘T.H.’ Discourse of Two Infamous Upstart Prophets 16 Apr. 4: Such is the stupidity of blind Simplicity and Ignorance, of which these shuttle-witted fellows are too much guilty.
1648		in B.M. Dix Allison’s Lad in Mayorga (1919) 219: Hold your tongues, you shuttle-headed fools!