The Collaborative International Dictionary of English v.0.48:

Filch \Filch\ (f[i^]lch), v. t. [imp. & p. p. Filched
   (f[i^]lcht); p. pr. & vb. n. Filching.] [Cf. AS. feolan to
   stick to, OHG. felhan, felahan, to hide, Icel. fela, Goth.
   filhan to hide, bury, Prov. E. feal to hide slyly, OE.
   felen.]
   To steal or take privily (commonly, that which is of little
   value); to pilfer.
   [1913 Webster]

         Fain would they filch that little food away. --Dryden.
   [1913 Webster]

         But he that filches from me my good name,
         Robs me of that which not enriches him,
         And makes me poor indeed.                --Shak.
   [1913 Webster]

WordNet (r) 3.0 (2006):

filch
    v 1: make off with belongings of others [syn: pilfer,
         cabbage, purloin, pinch, abstract, snarf,
         swipe, hook, sneak, filch, nobble, lift]

Moby Thesaurus II by Grady Ward, 1.0:

34 Moby Thesaurus words for "filch":
   abstract, and, annex, appropriate, bag, boost, borrow, cop, crib,
   defraud, embezzle, extort, hook, lift, make off with, nip, palm,
   pilfer, pinch, poach, purloin, run away with, rustle, scrounge,
   shoplift, snare, snatch, snitch, steal, swindle, swipe, take,
   thieve, walk off with