n.a small vessel with a rim curved to fit the orbit of the eye; use to apply medicated or cleansing solution to the eyeball
"an eyecup is called an eyebath in Britain"
同义词：eyecupeye cup
英汉双解大词典
eyebath/ˈaɪˌbɑːθ/
1.
N（名词）
a small vessel with a rim shaped to fit round the eye, used for applying medicated or cleansing solutions to the eyeball 洗眼杯 (Also called (US and Canadian) eyecup)