Verb

1. To marry, wed, get married.
   • 1869, William Makepeace Thackeray, Burlesques, ch. 3,

     Rowena sacrificed her inclination to remain single, to her sense of duty; and contracted a second matrimonial engagement. . . . Cardinal Pandulfo tied the knot for them.

   • 2002, Scott MacLeod, "Live from Baghdad," Time, 25 Nov.,

     After the 20-year-old mechanic tied the knot with his 18-year-old cousin, the newlyweds headed to Baghdad's Ishtar Hotel.