Top Definition
A term used to call a Marine with glasses.
Get over here port holes...Can you see my future with those tri-focals???
by C_Dog23 April 11, 2006
2 more definitions
The act of surprising an unexpecting stranger with a jumbo marshmallow shoved deep into their oral cavity.
Sorry I didn't answer my phone I was busy giving out Port Holes last night.
by 543210 August 29, 2011
Mild/humourous euphemism for anus.
Excuse me, my porthole is bursting.
by ud40 February 23, 2005

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