verb
whittles; whittled; whittling
[+ obj] :to cut or shape (a piece of wood) by cutting small pieces from it
whittle away
[phrasal verb]
whittle (something) away or whittle away (something) :to reduce or get rid of (something) slowly
whittle down
[phrasal verb]
whittle (something) down or whittle down (something) :to gradually make (something) smaller by removing parts