Rare term for a rope or strap attached to an animal's neck to control it. More common words are 綱 (つな) or リード.
I walk the dog with a leash on its neck.
Please hold the cow's tether firmly.
Standard kanji spelling for this rare term.
Rarely used kanji form; 頸 is an older character for 'neck'.
Compound of 首 (くび, 'neck') and 綱 (つな, 'rope'), with rendaku voicing つな → づな.