kość

A composite material consisting largely of calcium phosphate and collagen and making up the skeleton of most vertebrates.

Қалай қолдану керек

The noun 'kość' (bone) is feminine despite ending in a consonant, and declines as a feminine i-stem (genitive/locative 'kości', instrumental 'kością', nominative plural 'kości'). It can refer to anatomical bones, dice ('kości do gry'), or computer hardware keys/blocks.