Denshi Jisho — Online Japanese dictionary

あご chin; jaw
Common word, Noun, No-adjective 
あぎと 1: (Archaism) chin; jaw;
2: (Archaism) gills; branchia
Noun 
あぎと 1: (Archaism) chin; jaw;
2: (Archaism) gills; branchia
Noun 
あごはぜ forktongue goby (Chaenogobius annularis); chestnut goby
Noun, Usually written using kana alone 
あごひげ beard (esp. on the chin); goatee
Noun 
あごひげ beard (esp. on the chin); goatee
Noun 
あごひも chin strap
Noun 
あごぼね jawbone
Noun 
がっこつ jawbone
Noun 
沙魚 あごはぜ forktongue goby (Chaenogobius annularis); chestnut goby
Noun, Usually written using kana alone 
ひげ あごひげ beard (esp. on the chin); goatee
Noun 
がっきゃく maxilliped; gnathopod
Noun 
下腺 がっかせん submandibular gland; submaxillary gland
Noun 
関節 がくかんせつ jaw joint
Noun 
で使う あごでつかう 1: to set somebody to work in an arrogant fashion; to push somebody around; to indicate by pointing one's chin;
2: (Slang) to chatter; to jaw; to jabber
Expression, Godan verb with u ending 
動脈 がくどうみゃく maxillary artery
Noun 
が干上がる あごがひあがる to lose one's means of livelihood; to become unable to earn a living
Expression, Godan verb with ru ending 
鬚海豹 あごひげあざらし bearded seal (Erignathus barbatus)
Noun, Usually written using kana alone 
がしゃくれる あごがしゃくれる to have a turned-up chin
Expression, Ichidan verb 
のしゃくれた あごのしゃくれた (person) with a turned-up chin
Expression 

You can also

Look up kanji details for 顎.

Try a Yahoo Jisho search for 顎 .
Try a Goo Jisho search for 顎 .
Try a Google search for 顎 .