Short for "set the mainsails." A sailing reference meaning to go to a specific place or to head in a certain direction.
"After final exams, we set the mains for our favorite bar."
"At the start of the semester, I set the mains for all the best college radio stations."
"At the start of the semester, I set the mains for all the best college radio stations."
by yes juanito yes May 30, 2017
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