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porthole |
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porthole a small aperture in the side of a vessel to admit light and air, usually fitted with a watertight glass or metal cover, or both porthole [′port‚hōl] (design engineering) The opening or passageway connecting the inside of a bit or core barrel to the outside and through which the circulating medium is discharged. (engineering) A circular opening in the side of a ship or airplane, usually serving as a window and containing one or more panes of glass. How to thank TFD for its existence? Tell a friend about us, add a link to this page, add the site to iGoogle, or visit webmaster's page for free fun content. |
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