Open English Wordnet
Nouns
(n)kickoff(football) a kick from the center of the field to start a football game or to resume it after a score (n)beginning, commencement, first, outset, get-go, start, kickoff, starting time, showtime, offsetthe time at which something is supposed to begin“they got an early start”,
“she knew from the get-go that he was the man for her”