The Collaborative International Dictionary
Harmaline \Har"ma*line\ (h[aum]r"m[.a]*l[i^]n or -l[=e]n), n. [Cf. F. harmaline See Harmel.] (Chem.) An alkaloid found in the plant Peganum harmala. It forms bitter, yellow salts.
Wiktionary
n. The reduced hydrated form of harmine.
Wikipedia
Harmaline is a fluorescent psychoactive indole alkaloid from the group of harmala alkaloids and beta-carbolines. It is the partially hydrogenated form of harmine.
Usage examples of "harmaline".
They were urging me to experiment with my voice and I discovered years later, taking Ayahuasca in the Amazon jungles, tribes of Indians that have actually mastered this art, and that saturate their bodies with DMT and harmaline, and then sing.
Well, later it was realised that the compound had previously been isolated from the giant Syrian rue, Peganum harmala, and that the compound had already been named harmaline, so telepathene disappeared from the literature in favour of harmaline.