A person who uses pharmaceutical drugs recreationally or to reach a new level of enlightenment, or a person who indulges in different pharmaceuticals.
Jerry: Yo why you been taking so many different drugs Steve?
Steve: I'm a Pharmonaut now man, I wanna try em all!
Steve: I'm a Pharmonaut now man, I wanna try em all!
by Xannies May 28, 2019
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