The Collaborative International Dictionary of English v.0.48:

Anisyl \An"i*syl\, n. (Org. Chem.)
   (a) The univalent radical, CH3.O.C6H4-, of which anisol is
       the hydride.
   (b) The univalent radical CH3.O.C6H4.CH2-; as, anisyl
       alcohol.
   (c) The univalent radical CH3.O.C6H4.CO-, of anisic acid.
       [Webster 1913 Suppl.]