opener
英 ['əʊp(ə)nə]
美['opnɚ]
	    - n. [五金] 开启工具;开启的人
 
英英释意
- 1. the first event in a series;
 - "she played Chopin for her opener"
 - "the season's opener was a game agains the Yankees"
 
- 2. a person who unfastens or unwraps or opens;
 - "children are talented undoers of their shoelaces"
 
- 3. a hand tool used for opening sealed containers (bottles or cans)