عتبة (عمارة) Threshold

A worn-out wooden threshold

A threshold is the sill of a door. Some cultures attach special symbolism to a threshold. It is called a door saddle in New England.^{[بحاجة لمصدر]}

Door thresholds cover the gap between the floor and the door frame, helping to prevent any water leaks, insects or draughts from entering through the opening.

 الرمزية الثقافية

In many cultures it has a special symbolism: for instance, in Poland, Ukraine and Russia it is considered bad luck to shake hands or kiss across the threshold when meeting somebody. In many countries it is considered good luck for a bridegroom to carry the bride over the threshold to their new home.