Chew at - Idioms by The Free Dictionary
chew (away) at (something)
To chew on something repeatedly or for a length of time. The baby has been completely miserable lately, except for when he's chewing away at a teething ring.
chew (away) at something
to gnaw or chew something for a period of time. The puppy chewed away at the leather belt all night.
References in periodicals archive
TODAY understands that Khoo has received a sum - amounting to thousands - from Chew at
the carpark during the Chinese New Year holiday, in exchange for facilitating an arrangement with boatman Tan Poh Teck.
Your dog will probably dig, claw, and even chew at
your foot to try to get the treat.