对饮

Pinyin: duìyǐn 
Meaning：Have a drink together
Sentence: 身份地位相似的人相互敬酒时，要相互斟酒，碰杯对饮。People with similar status toast each other, we should pour each other, clink on the drink.

More:

对：

Pinyin: duì
Meaning: to; pair; right; couple
Radical: 寸
Stokes: 5
Traditional: 對
Common words/Phrase:
对话 [duìhuà] 【dialogue】
对于 [duìyú] 【toward】
对方 [duìfāng] 【counterpart】
对象 [duìxiàng] 【object】
对比 [duìbǐ] 【contrast】

饮：

Pinyin: yǐn,yìn
Meaning: drink; lush
Radical: 饣
Stokes: 7
Traditional: 飲
Common words/Phrase:
饮食 [yǐnshí] 【food and drink】
饮料 [yǐnliào] 【beverage】
冷饮 [lěngyǐn] 【cold drink】
饮水思源 [yǐnshuǐ sīyuán] 【grateful for favors received or not to forget one's origins】