to join or attach by stitches.

to make, repair, etc., (a garment) by such means.

to enclose or secure with stitches

to sew flour in a bag.

to close (a hole, wound, etc.) by means of stitches (usually fol. by up ).

to work with a needle and thread or with a sewing machine. ?

sew up,

Informal . to get or have a monopoly of; control exclusively.

Informal . to complete or conclude (arrangements, negotiations, etc.) successfully

They were about to sew up the deal when the argument started.

to gain or be assured of

He tried to sew up as many votes as possible before the convention.