noun
- The first event in a series.
- usage: "she played Chopin for her opener"; "the season's opener was a game against the Yankees"
- A person who unfastens or unwraps or opens.
- usage: "children are talented undoers of their shoelaces"
- synonyms: undoer, unfastener, untier
- A hand tool used for opening sealed containers (bottles or cans. ).
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). opener. Retrieved September 20, 2026, from http://smartdefine.org/opener/definitions/1206346 |
| Chicago | WordNet. 2010. "opener" http://smartdefine.org/opener/definitions/1206346 (accessed September 20, 2026). |
| Harvard | WordNet 2010, opener, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/opener/definitions/1206346>. |
| MLA | WordNet. "opener" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/opener/definitions/1206346> |