Same as herb mastic (which see, under herb).(noun)
The Century Dictionary (Public Domain)
Use "marum" in a sentence
"Cat Thyme (_Teucrium marum verum_) was imported from Spain, and is cultivated in our gardens as a cordial aromatic herb, useful in nervous disorders."
"Now there, "he went on, pointing with his stick," there I think grows my mastick or marum; perhaps I smell it, however."
"No kitten upon a bed of marum ever played such antics."