1-ANY activity persisting over time horizons, small or large.

2-An abbreviation for the word session.

3-May also refer to emotional, physical, or mental states.

4- Any experience which is definable in time horizons, usually marked by beginning and end, often used as a subtle comment on the impermanence of these expriences.

Short for session, informal. usually refers to a group activity, commonly riding bmx's or smoking marijuana.

Seshing/sessioning, is used in riding terms for the object you are having the sesh on.

Where a group of two or more people play call of duty for a ridiculous amount of time - usually into the early hours of the morning. This involves a shitload of banter!!

Sesh comes from the word session.
Cod is short for call of duty and is a fuckin intense fps!!

when a group of friends throws in a nice fat lip (chewing tobacco) and has some quality bonding time in which they talk about anything. Seshes can be held anywhere but are usually held in the bathroom stalls, cars, or in dorm rooms.

To session something up.

To undertake a certain action or activity.

A group of niggas taking turns fucking on a bitch

Sesh. Sesh is devouring through several grams of cocaine. Deciding that the pills you bought off your mate the other week would be a fab idea to then chuck down your throat. Also realizing later that the guy your with has MDMA to smash and then washing that down with the goodness of a vodka or two. Oh wait? Someone's offering MCAT? You're definitely not going to say no to that are you before realizing the time is 9:43 am and you've been at it 13 hours in someones grungy dungeon of a living room. THAT is sesh.