To wrap something is to enclose it, like when you wrap holiday presents in glittery paper. When you're done with the presents, you can wrap yourself in a cozy blanket while you drink hot chocolate.
Wrap also has a number of noun meanings. There's the wrap you wear, which is similar to a cloak or a shawl. There's also the plastic wrap you use to cover a bowl of leftovers, and the wrap you make when you fold a tortilla around sandwich fillings. The verb wrap came first, from a root meaning "to turn or wind." To wrap something up also means to end it, so let's wrap up this blurb by saying, "That's a wrap!" — it's what movie directors since the 1920s have been saying when filming is finished.