1.
If you sew up pieces of cloth or tears in cloth or skin, you join them together using a needle and thread.
Next day, Miss Stone decided to sew up the rip...
PHRASAL VERB : V P n (not pron) , also V n P
2.
If someone sews up something such as a business deal, an election, or a game, they make sure that they will get the result they want. ( INFORMAL )
If they didn’t move fast, Johnson could sew this deal up within days...
The Italians think they’ve got it all sewn up.
PHRASAL VERB : V n P , V n P , also V P n (not pron)