The Collaborative International Dictionary of English v.0.48:
Snaggy \Snag"gy\, a. 1. Full of snags; full of short, rough branches or sharp points; abounding with knots. "Upon a snaggy oak." --Spenser. [1913 Webster] 2. Snappish; cross; ill-tempered. [Prov. Eng.] [1913 Webster]