Yett

A yett (from the Old English and Scots language word for `gate`) is a gate or grille of latticed wrought iron bars used for defensive purposes in castles and tower houses. Unlike a portcullis, which is raised and lowered vertically using mechanical means, yetts are hinged in the manner of a traditional gate or door, and secured by bolts attached.....
Found on http://en.wikipedia.org/wiki/Yett

Yett

(Scottish) open metal grid, hinged to form protection for a doorway, a sort of Scottish portcullis. Yetts, made of wrought iron, were constructed on a 'through and through' basis, meaning that the individual iron bars of which they were made, pierced or threaded through other bars, and were...
Found on http://www.encyclo.co.uk/local/20935

Yett

a gate.
Found on http://www.telelib.com/authors/S/ScottWalter/prose/pirate/glossary.html

Yett

iron gate
Found on https://www.encyclo.co.uk/local/20402

Yett

iron gate
Found on http://www.encyclo.co.uk/local/22129

Yett

Iron lattice gate.
Found on http://www.encyclo.co.uk/local/20018

Yett

Iron lattice gate.
Found on http://www.castlesontheweb.com/glossary.html

yett

Scottish variation on portcullis. Gate made of intersecting iron bars penetrating each other vertically and horizontally
Found on http://www.castles-of-britain.com/glossary.htm
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