an inlet with two or more couplings to which a hose can be attached so that fire engines can pump water into the sprinkler system of a building (noun.artifact)
the act of inhaling; the drawing in of air (or other gases) as in breathing(noun.act)
the bodily process of inhalation and exhalation; the process of taking in oxygen from inhaled air and releasing carbon dioxide by exhalation (noun.act)