[n] the act of inhaling; the drawing in of air (or other gases) as in breathing
[n] a medication to be taken by inhaling it
breath, breathing, drag, external respiration, gasp, medicament, medication, medicinal drug, medicine, pant, puff, pull, respiration, ventilation
\In`ha*la"tion\, n. [Cf. F. inhalation.] The act of inhaling; also, that which is inhaled.