idiom · few; minority (often used in the set phrase 寡不敌众 guǎ​bù​dí​zhòng meaning 'the few cannot resist the many')

他虽然勇敢抵抗，但终究寡不敌众。

adjective, idiom · small in number or amount; scant

此人性格孤僻，平时话极寡。

verb · having lost one's spouse; relating to a widow

那位妇女年纪轻轻就守寡了。