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a deviant of the word "yum" but almost always used in a sarcastic way
Bella: look at my staph infection
Tatum: yermm
by cheermaniac0604 August 08, 2017
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Describing a person who is good company.

An entertainer, or class act. (Usually a male)

Someone who is likable, and amusing at the same time.
If there is Someone you see every so often, and just get either happy or excited, or if your mood changes positively, you describe that Someone as being a Yerm. Or simply call them Yerm.

Prefixes describing the person like small, big, tiny etc. can be used. For example, Big Yerm.
by SBViking2009 April 09, 2009
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yummy sperm as in the sexually seasoned manjuice from a male ejaculated penile area, mostly used as a descriptive noun by nymphos or horny women
Guy 1: Dude last night was effing crazazy the girl was a freak.
Guy 2: That's INTENSE! What was she saying?
Guy 1: She was like MORE YERM MORE YERM!
by justin duong foo February 14, 2008
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In a lunar calendar, a period somewhat like a year in which the odd numbered months have 30 days and the even number months have 29 days.
Also the time it takes for the mean synodic month to fall half a day behind the 29.5 day cycle.
A lunar calendar can constructed from yerms of 17 and 15 months.
by Karl Palmen April 23, 2003
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