From Japanese-English FreeDict Dictionary ver. 0.1:
齧る, [ichi2] 噛る, 囓る, [ichi2] かじる
1. (Godan verb with `ru' ending)
(transitive verb)
Note: word usually written using kana aloneto chew, to bite (at), to gnaw, to nibble, to munch, to crunch, to have a smattering of
2.
Note: word usually written using kana aloneto dabble in (e.g. hobby, instrument)