air passage provided by a retractable device containing intake and exhaust pipes; permits a submarine to stay submerged for extended periods of time
breathing device consisting of a bent tube fitting into a swimmer's mouth and extending above the surface; allows swimmer to breathe while face down in the water
utter aloud; often with surprise, horror, or joy; "`I won!' he exclaimed"; "`Help!' she cried"; "`I'm here,' the mother shouted when she saw her child looking lost"
a training program in which a person is given information about physiological processes (heart rate or blood pressure) that is not normally available with the goal of gaining conscious control of them