wick 
(wĭk)
(wĭk)n.
1. A cord or strand of loosely woven, twisted, or braided fibers, as on a candle or oil lamp, that draws up fuel to the flame by capillary action.
2. A piece of material that conveys liquid by capillary action.
tr. & intr.v. wicked (wĭkt), wick·ing, wicks
To convey or be conveyed by capillary action: water gradually wicking up through the bricks.
[Middle English wike, from Old English wēoce.]