Real Dictionary

tie
verb: If you tie a knot or bow in something or tie something in a knot or bow, you fasten the ends together.
verb: If you tie a piece of string or cloth around something or tie something with a piece of string or cloth, you put the piece of string or cloth around it and fasten the ends together.
verb: If you tie something or someone in a particular place or position, you put them there and fasten them using rope or string.
verb: If you tie two things together or tie them, you fasten them together with a knot.

tie in American English
to fasten, attach, or bind together or to something else, as with string, cord, or rope made secure by knotting, etc.
intransitive verb: to make a tie, bond, or connection
transitive verb: to bind, fasten, or attach with a cord, string, or the like, drawn together and knotted

tie in British English
verb: to fasten or be fastened with string, thread, etc