下顎[kagaku] lower jaw
二重顎[nijuuago] double chin
顎骨[agobone] jawbone
上顎[uwaago] upper jaw
顎紐[agohimo] chin strap

顎ひげ[agohige] beard (esp. on the chin)
下顎骨[kagakukotsu] mandible
顎関節[gakukansetsu] jaw joint
顎で使う[agodetsukau] to set somebody to work in an arrogant fashion

お負けに[omakeni] to make matters worse
依怙贔負[ekohiiki] favoritism
一六勝負[ichirokushoubu] gambling
下請負[shitaukeoi] subcontract
夏負け[natsumake] suffering from summer heat

丸負け[marumake] complete defeat
気負い[kioi] fighting spirit
元請け負い人[motoukeoinin] master contractor
言負かす[iimakasu] to talk (a person) down
固定負債[koteifusai] fixed liabilities