What is Marchish?
1.
An expression of approval. Originally, something that happened in the month of march, or, since march was such a great month, something that is so great it could have happened in march. Now it has been broadend to apply to anything that is 
Yo, that party was marchish, or these are some marchish beats
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1. 
A furry monster who destroyed the plains of Kenya for several decades. He is also referred to as "The Ghost of Skookum Creek"... 
1. 
A suspended clew of shit trapped in the pubic anal hair.
Quincy, please release your fore-finger and thumb from my Quartz-Bauble's..