What is "roin"

Royne \Royne\ (roin), v. t. [F. rogner, OF. rooignier, to clip, pare, scare, fr. L. rotundus round See Rotund.] To bite; to gnaw. [Written also roin.] [Obs.]
--Spenser.

Etymology 1 vb. (context obsolete English) To growl; to roar. (15th-17th c.) Etymology 2

n. (context obsolete English) A scab; a scurf, or scurfy spot. (15th-16th c.)