"bitten away" is correct and usable in written English.
You can use it in the context of something being gradually eroded over time by a gradual process. For example, "The relentless passage of time has slowly bitten away at the ruins of the once magnificent castle".
But the 21st century is biting away at such old certainties, leaving a future perceptibly less assured.
"You've got to eat little pieces and you just keep biting away at it until you win".
When he's not biting away at the foundations of our world, he bickers with the unnamed eagle that sits on top of the tree.
The sidewalk diners at a nearby restaurant, biting away at heavily spiced skewers of lamb kebab and tucking into bowls of meaty stew, seem as though they could have been chosen by casually throwing darts at a map of Asia.
The power biter is driven by a strong need for autonomy.... ...... Statistics are scant on biting, away from the football pitch and boxing ring ("I guess any part of the body is up for eating," Evander Holyfield, the boxer whose ear was beaten in the ring by Mike Tyson, tweeted) but a local investigation last October suggested teeth are often used as weapons.
So today, while firefighters poured water on the warehouse -- and an adjacent warehouse to which the fire spread Sunday -- from the east side of the buildings, the cranes bit away chunks of the structures, tossed aside scoopfuls of dusty, mangled debris and plunged back in for more.
The Australians were always there, snapping and biting away at them like a little terrier but that was a stonking performance.
"If you are in the team there is always going to be someone biting away at your heels trying to get in.
