Cách sử dụng
The expression "tie the knot" means to get married. It comes from the idea of two people getting married and their union being a knot that ties them together. You can use this expression when you talk about a couple who recently got married or someone who's planning to get married soon. For example, "John and Sarah tied the knot last weekend," or "I heard that they're planning to tie the knot next year."