A passage that leads into a cavity.
A body of water let into a coast, such as a bay, cove, fjord or estuary.
To let in; admit.
To carve the wooden stock of a firearm so as to position the metal components in it.
To insert; inlay.
A hollow tube, held in the mouth, or mounted on and opening into a diving mask, used by swimmers for breathing underwater.
A snorkel parka.
A retractable tube fitted in diesel-engine submarines to allow sufficient ventilation that the engines may be used at periscope depth.
To use a snorkel.