What is "unchewable"

Usage examples of "unchewable".

Then he stepped into the shadow of a deep doorway and felt in his mouth for the piece of pie that had seemed curiously unchewable even by pie standards.

Most of it was unchewable - old picture frames, a pianoforte, an ancient unconnected gas cooker, that sort of thing.

The conversation infuriated him with its irrelevance, and the shepherd's pie that Judith had prepared especially for Belthainn Eve was as tasteless and unchewable in his mouth as wood.