Third-person singular simple present indicative form of defoam

Having autism, or pertaining to autism. / (now derogatory, offensive, slang, and medically obsolete) Socially inept, self-absorbed, or stupid.

(Ireland, idiomatic) An interjection expressing exasperation or incredulity. or to illustrate the humour in a situation.

(medicine) An expansion of the air passages through the bronchi of the lungs