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portal bridge
portal site
portal system
portal vein
portamento
portative organ
portcullis
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porter (1)
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porthole
port·hole [ páwrt hl ] (plural port·holes)


noun 
Definition:
 
1. round window: a small round window with a metal frame in the side of a ship
2. opening for weapon: a small opening in a fortified wall through which weapons can be fired
Encarta® World English Dictionary [North American Edition] © & (P)2009 Microsoft Corporation. All rights reserved. Developed for Microsoft by Bloomsbury Publishing Plc.
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