1) Maoi 2) Monoamine oxidase inhibitor 3) Nardil 1) Nardil 
(from the article `antidepressant`) The monoamine oxidase inhibitors—chiefly isocarboxazid, phenelzine, and tranylcypromine—in general are used only after treatment with tricyclic drugs ...
<drug> This drug, which is a strong monoamine oxidase (MAO) inhibitor, is used to treat people with mixed anxiety and depression. ... (31 Dec 1997) ... 
(fen´әl-zēn) a monoamine oxidase inhibitor, administered orally as the sulfate salt as an antidepressant and in the prevention of migraine.
[n] - monoamine oxidase inhibitor (trade name Nardil) used to treat clinical depression
Nardil noun monoamine oxidase inhibitor (trade name Nardil) used to treat clinical depression