A long, thin bone in a fish extending sideways from the backbone.

Alternative spelling of bone-idle

plural of whirl-bone

(medicine, archaic) The patella, rotula, or kneecap. / (medicine, archaic) The head of the femur.

(chemistry) A bond formed between one or more pairs of electrons in the valence shell of two or more atoms

plural of triquetral bone

plural of palatine bone

(slang, vulgar) To disappoint or discourage someone by ruining or criticising their plans or aspirations.

(obsolete, nautical, slang) to play dice.

plural of occipital bone