spur; cockspur; calcar
Refers to the sharp, bony projection on the leg of a bird, especially a rooster or pheasant, used for fighting.
The rooster's spur is very sharp.
fetlock
Rare usage; refers to the tuft of hair or the projection on the back of a horse's leg above the hoof. In modern contexts, 距 is more commonly used for the spur of a bird.
The pheasant's spur is used in fighting.
In old documents, there are descriptions of the horse's fetlock.
African spurred tortoise; sulcata tortoise
Standard kanji spelling for the spur of a bird.
Single-kanji form; less common and may be confused with other readings of 距.
The kanji 蹴 (kick) and 爪 (claw) combine to suggest a claw used for kicking, fitting the meaning of a bird's spur. The reading けづめ is a native Japanese word (kun'yomi).