v.
  - reduce in thickness towards one end.
 - 
(taper off)
 gradually lessen.
 
n.
 a slender candle. 
▸a wick coated with wax, used for conveying a flame.
 
  Etymology
  OE, dissimilated form (by alt. of p- to t-) of L. papyrus (see papyrus), the pith of which was used for candle wicks.