tie the knot

US /taɪ ðə nɑt/
UK /taɪ ðə nɑt/
"tie the knot" picture
1.

casarse, contraer matrimonio

to get married

:
After dating for five years, they finally decided to tie the knot.
Después de cinco años de noviazgo, finalmente decidieron casarse.
They're planning to tie the knot next spring.
Están planeando casarse la próxima primavera.