It's called a top hat.
The slang term for a hard taco is often referred to as a "shell" or a "crunchwrap" due to its hard and crunchy texture.
"yakka"Hard work is hard yakka.
Their body is covered with a hard exoskeleton.
Some slang words for crack include rock, hard, white lady, and base.
Selena Gomez has a black speck case on her mac http://www.itechnews.net/wp-content/uploads/2009/12/Speck-SeeThru-Satin-hard-shell-case-for-White-Unibody-MacBook-black.jpg
Someone who studies very hard might be called a bookworm. You could also say they keep their nose to the grindstone.
Lace? Silk? Steel? Papayas? (OK, maybe not that last one.) Satin is combined with a lot of other words and it's hard to know which one you have in mind.
"Boner" is a slang term for the erect hard male penis.
Hard core means serious, dedicated, active or committed - as in a hard core believer or member of an organization.
A Crustacean is a hard covered animal such as a lobster or a crab. A Gastropod is also a hard covered animal, but it classifies as a slug, or a snail.
Satin is generally not considered hard-wearing, as it is a delicate fabric that can be prone to damage from abrasion, fading, and stains. Its smooth surface can show signs of wear more quickly than sturdier fabrics. While some satin blends may offer improved durability, care should be taken to maintain its appearance. Overall, for items that experience heavy use, other fabrics may be more suitable.
It originates from sweat being the result of hard work. So the slang stands for "That's easily done!" and from there to "Sure, I'll do it!".