
thumb|Portcullis at Desmond Castle, Adare, [[County Limerick, Ireland]] thumb|The inner portcullis of the Torre dell'Elefante in [[Cagliari, Sardinia, Italy]]
thumb|Portcullis at Desmond Castle, Adare, [[County Limerick, Ireland]] thumb|The inner portcullis of the Torre dell'Elefante in [[Cagliari, Sardinia, Italy]]
A portcullis ( "sliding gate") is a heavy, vertically closing gate typically found in medieval fortifications. It consists of a latticed grille made of wood and/or metal, which slides down grooves inset within each jamb of the gateway.
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).