1) Ate 1) Ate like a mouse 2) Chewed like a beaver 3) Chewed like a chipmunk 4) Chewed on 5) Chewed on a bone 6) Chewed with canine teeth 7) Erose 8) Like some steak bones 9) Made like a beaver 10) Made like a rodent 11) Was an eager beaver 12) Wore down 13) Worked like beavers 14) Worked on a bone 
• (imp. & p. p.) of Gnaw
Refers to the condition of a book; chewed-on edges or corners of a book.