An abbriviation of the word session, may relate to drinking, smoking pot, excessive computer gaming or anything else that lasts a prolonged period of time.

A 'sesh' is when a person or group get so twisted that there in a gaff at 6AM gurning back out £150 down with a blocked nose filled with Ket. Drinking isn't a sesh

The process of excessive drug use of your choice with a small to medium group of friends, sometimes people you don't even know. This usually occurs outside in a recreational park or a small, sweaty bedroom. The 'sesh' (short for session) usually ends when the sunrises, however can continue for as long as your body and jaw lets you.

A "session" in which one smokes cannabis sativa through the use of a bong with a collective of friends.

An abbreviation or short form of session.

otherwise known as session- When two or more participants smoke a shit load of weed over a certain period of time, always resulting in each and every one of the smokers being extremely stoned.

A shortened way of saying "session".