Opener
WordNet
noun
(1) A hand tool used for opening sealed containers (bottles or cans)
(2) The first event in a series
"She played Chopin for her opener"
"The season's opener was a game against the Yankees"
(3) A person who unfastens or unwraps or opens
"Children are talented undoers of their shoelaces"
WiktionaryText
Noun
- A device that opens something; specifically a tin-opener/can-opener, or a bottle opener.
- The player who starts the betting.
- (in plural openers) Cards of sufficient value to enable a player to open the betting.
- The first act in a variety show.
- A batsman who normally plays in the first two positions of an innings.
- The first in a series of events, items etc.; the first remark or sentence of a conversation.