The Collaborative International Dictionary of English v.0.48:
Whittle \Whit"tle\, v. t. [imp. & p. p. Whittled; p. pr. & vb.
1. To pare or cut off the surface of with a small knife; to
cut or shape, as a piece of wood held in the hand, with a
clasp knife or pocketknife.
2. To edge; to sharpen; to render eager or excited; esp., to
excite with liquor; to inebriate. [Obs.]
"In vino veritas." When men are well whittled, their
tongues run at random. --Withals.