gnaw

Từ điển American Heritage Dictionary 4th

gnaw (nô)v. gnawed, gnaw·ing, gnawsv. tr.
1.
a. To bite, chew on, or erode with the teeth.
b. To produce by gnawing:
gnaw a hole.
See Synonyms at bite.
c. To erode or diminish gradually as if by gnawing:
waves gnawing the rocky shore.
2. To afflict or worry persistently:
fear that constantly gnawed me.v. intr.
1. To bite or chew persistently:
The dog gnawed at the bone.
2. To cause erosion or gradual diminishment.
3. To cause persistent worry or pain:
Hunger gnawed at the prisoners. [Middle English gnauen, from Old English gnagan.] gnawʹer n.

• Từ đồng nghĩa / Synonyms:
  erode, gnaw at, eat at, wear away