or slangam, subs. (old).A lout.
1592. GREENE, A Quip for an Upstart Courtier [Harleian Miscellany, V. 407]. The third was a long leane, olde, slavering SLANGRILL.
1611. COTGRAVE, Dictionarie, s.v. Longis. A tall and dull SLANGAM, that hath no making to his height, nor wit to his making; also one that being sent on an errand is long in returning.