[Imitative.] A sharp clicking sound. Cf. SNICK sb.3
1851. Mayne Reid, Scalp Hunt., iv. Back went the girth buckles with a sneck.
1861. A. Leighton, Storied Trad. Sc. Life, Ser. II. 116. An industrious house too, wherein the birr of the wheel and the sneck of the reel had sounded.