'Opening' in the Bible

And the Bene-Ammon come out, and set battle in array, at the opening of the gate, and Aram of Zoba, and Rehob, and Ish-Tob, and Maacah, are by themselves in the field;

and Uriah lieth down at the opening of the king's house, with all the servants of his lord, and hath not gone down unto his house.

and the messenger saith unto David, 'Surely the men have been mighty against us, and come out unto us into the field, and we are upon them unto the opening of the gate,

Then the woman took and spread a covering over the opening of the well; then she spread out dried grain on it, so nothing was discovered.