manhole coaming

manhole coaming

[′man‚hōl ‚kōm·iŋ]
(naval architecture)
The raised framework or stiffening around the edge of a manhole in the deck of a ship to strengthen the opening and provide a support for the cover.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.