Synonyms:
opener
Meaning: the first event in a series; "she played Chopin for her opener"; "the season's opener was a game against the Yankees"
Usage examples
This when she opened proved to contain a delicately chased little envelope opener, shaped like a tiny scimitar.
On the opener spots beneath the trees the ground is covered to a depth of two or three feet with mosses of indescribable freshness and beauty, a few dwarf conifers often planted on their rich furred bosses, together with pyrola, coptis, and Solomon's-seal.