knuckly

Knucklelike.

[N]ow he was skirting a rock face whose crown overhung its base and whose extensive surface was knuckly with the clay nests of innumerable martins; […]

Having prominent knuckles.

At the far end of the houses the head gardener stood waiting for his mistress, and he gave her strips of bass to tie up her nosegay. This she did slowly and laboriously, with knuckly old fingers that shook.