1) The regional form of gate, in the sense of a moveable barrier.
1489 comaunding hym for to go to Boutham barre and to shet the greit yats of the same, York
1546 fre entre, egresse and regresse ... in and thoroughe the dores and yattes of the Northside and of the bakeside of the saide messuadge, Wakefield
1573 Paid xviijd for a pece of Iron for the yates, Honley
1614 Richard Lingeard ... for takeinge and carrying away a barr out of a yeate called badger yeate in Calton
1675 they parted at a yeate or gate called Standing Stone yeate, Grassington. It gave rise to several by-names and was the source of the surname Yates: 1322-6 John atteyate
John ad Portam, Wadworth.