Definition of portcullis noun from the Oxford Advanced Learner's Dictionary



BrE BrE//pɔːtˈkʌlɪs//
; NAmE NAmE//pɔːrtˈkʌlɪs//
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a strong, heavy iron gate that can be raised or let down at the entrance to a castle Word OriginMiddle English: from Old French porte coleice ‘sliding door’, from porte ‘door’ (from Latin porta) + coleice ‘sliding’ (feminine of couleis, from Latin colare ‘to filter’).
See the Oxford Advanced American Dictionary entry: portcullis