Noun get-go has 1 sense

• get-go(n = noun.time) beginning, commencement, first, kickoff, offset, outset, showtime, start, starting time - the 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"
has particulars: birth, incipience, incipiency, starting point, terminus a quo, threshold
is a kind of point, point in time