sew sth up
phrasal verb with sew verb uk/səʊ/ us
informal to complete something successfully:
He hopes to sew up the nomination by the end of the month.
get/have sth (all) sewn up He aims to have the first deal sewn up early next year.
disapproving
to control something completely so that no one else has a share of it:
Our competitors have the adult market sewn up.