Cornish dial. ff. SICKER v.2
a. 1843. Southey, Comm.-pl. Bk., Ser. III. (1850), 725/1. The water zighyrs away. A Cornish mining word for dribbling, or flowing in a small stream.
1881. Raymond, Mining Gloss., Zighyr, zigger, or sicker, to percolate, trickle or ooze.
