Etymology: Middle English, from Old English sceard; akin to Old English scieran to cut -- more at SHEAR
1 a : a piece or fragment of a brittle substance; broadly : a small piece or part b : SHELL, SCALE; especially : ELYTRON
2 usually sherd : fragments of pottery vessels found on sites and in refuse deposits where pottery-making peoples have lived
3 : highly angular curved glass fragments of tuffaceous sediments

Slang name commonly used to describe a piece of crystal methamphetamine or meth.

A piece of crystal meth, a psychedelic stimulant, named for the shard-like crystals. Has nothing to do with shitting in your pants while farting, that's shart.

Verb.

Gamer slang meaning "to destroy" something.

Origin: In world of warcraft, one could destroy gear and turn it into jewel shards. Which could be sold for alot of money. When someone's account got hacked, the hacker would "shard" all the gear and sell the shards. They would then send the gold to themselves, or a stranger as a last fuck you to the player. This was also done by chinese companies who sell game gold online for real money.

The end result of a wet fart where one will find residual turd-lets in their underwear. If not cleaned promptly, the likely outcome of a shard and impact to the underwear is called a skid-mark.

Gamer slang for "destroy."

The term comes from MMORPGs that include a profession that destroys one thing for another. In world of warcraft, enchanting needed an ethereal type of material to craft enchantments on armor and weapons. It was obtained by "disenchanting" other pieces of special armor. The better the armor, the better the material. Because the material came out as dust and crystal shards, people called the act "sharding."

Because "sharding" a piece of armor would destroy it and replace it with expensive crafting materials, it was always a given that if your account was hacked by a chinese Farmer, he would shard all of your epic gear and sell the shards for gold.

It was also common for other players to do the same against one ex boy/girlfriend. See Example 1.

It became so ubiquitous, that it was used in games ever since. See Example 2.

It is also used by gamers in real life. See example 3.

A large crystal like rock, usually bigger than a piece of rice is known as a shard.