tie the knot

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

結婚, 喜結連理

to get married

:
After dating for five years, they finally decided to tie the knot.
約會五年後,他們終於決定結婚
They're planning to tie the knot next spring.
他們計劃明年春天結婚