zigger

from 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] Sicker

from The Collaborative International Dictionary of English v.0.48

Zigger \Zig"ger\, Zighyr \Zig"hyr\, v. i. (Mining)
   Same as {Sicker}. [Prov. Eng.] --Raymond.
   [1913 Webster]