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
a mechanism consisting of a metal honeycomb through which hot fluids circulate; heat is transferred from the fluid through the honeycomb to the airstream that is created either by the motion of the vehicle or by a fan
heater consisting of a series of pipes for circulating steam or hot water to heat rooms or buildings
reduced in efficacy or vitality or intensity; "our shriveled receipts during the storm"; "as the project wore on she found her enthusiasm shriveled"; "the dollar's shrunken buying power"
lean and wrinkled by shrinkage as from age or illness; "the old woman's shriveled skin"; "he looked shriveled and ill"; "a shrunken old man"; "a lanky scarecrow of a man with withered face and lantern jaws"-W.F.Starkie; "he did well despite his withered arm"; "a wizened little man with frizzy grey hair"