yerm

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

yerming

Yerming is when one individual has anal sex with another then sucks the cum out the ass with a straw

John didn't like yerming since the last time he did it he puked for the rest of the night

by Aaron April 24, 2004

yerm

A sperm on legs, usually running.

Wow, look at that yerm run!

by MICAELA.B April 26, 2008

yerm

Another Word for cool

oh my god luisa your word is yerm

by *spamy* June 04, 2006

yerm

the sound a plane makes when passing overhead

The plain said “YERM”!

by Lil Daddy Lysol March 12, 2018

yerm

To easily squish

The pillow is yermable

by Julie January 26, 2003

yerms

A group of very special men that can rip a juul and take your girl at the same time

everyone look out!!!! It is the yerms!!!!!

by Ham_BONE.er July 09, 2019