zigger, zighyr Cornish dial. ff. sicker v.2 a1843Southey Comm.-pl. Bk.Ser. iii. (1850) 725/1 The water zighyrs away. A Cornish mining word for dribbling, or flowing in a small stream.1881Raymond Mining Gloss., Zighyr, zigger, or sicker, to percolate, trickle or ooze.