The Collaborative International Dictionary of English v.0.48:
Sicker \Sick"er\, v. i. [AS. sicerian.] (Mining) To percolate, trickle, or ooze, as water through a crack. [Also written sigger, zigger, and zifhyr.] [Prov. Eng.] [1913 Webster] SickerThe Collaborative International Dictionary of English v.0.48:
Sigger \Sig"ger\, v. i. Same as Sicker. [Prov. Eng.] [1913 Webster]