opener

nouns

the first event in a series
"she played Chopin for her opener"; "the season's opener was a game against the Yankees"
opener
is derived from
open
is a type of (narrower)
the beginning of anything
"it was off to a good start"
start
a person who unfastens or unwraps or opens
"children are talented undoers of their shoelaces"
opener, undoer, unfastener, untier
is derived from
open
a hand tool used for opening sealed containers (bottles or cans)
opener
is derived from
open
is a type of (narrower)
a tool used with workers' hands
hand tool