臼jiù❶ （舂米的器具） mortar: 石 ～ stone mortar；
断木为杵，掘地为 ～。 They cut wood and fashioned it into pestles;they dug in the ground and formed mortars.
❷（形状像臼的）any mortarshaped thing
❸ （关节） joint (of bones): 脱 ～ dislocation (of joints)
❹ （姓氏） a surname: ～ 任 Jiu Ren
◆臼齿 dentes molares;mola;molar;molar teeth;back teeth;axle-tooth;azzletooth |