Uncloy

v. [UN-² 3.] trans. (See quots., and cf. CLOY v.¹ 1 and 4. In this sense Obs.)

1611.  Cotgr., Descloüer, to vnnayle, or vncloy: to loose, pull off, draw out, a nayle.

1627.  Capt. Smith, Seaman’s Gram., xiv. 68. To uncloy her [sc. a gun], is to put … oile … about the naile to make it glib, and by a traine giue fire to her by her mouth, and so blow it out.