Words that start with S

Slick means shiny, smooth, or slippery. Lots of men enjoy styling their hair so it looks slick.

You slide along a slippery surface by moving across it without ever breaking contact with that surface. The people in the picture are sliding down a waterslide.

A sling is a way of carrying a baby around. A sling is made from a piece of fabric, and goes over your shoulder. Babies like slings because it keeps them close and snuggly.

A slingshot is a weapon made from a Y-shaped arm with an elastic band connecting the two arms. There is usually a pocket for a stone or other projectile in the centre of the band. Slingshots can be very accurate, and can be used to hunt small game.

Something is slippery if it very hard to get a hold of, or you can't stick to it. A slippery surface is one your shoes or feet don't grip onto, so you fall over when you are walking on them. Slippery things are usually very smooth and are often wet and slimey.
Some things that are slippery are ice, wet roads, banana peels, and rocks at the beach at low tide that have algae growing on them.
The opposite of slippery is sticky.

Something is sloped if it has an angle some way off horizontal. The car in the picture has been parked on a road with a slope.

Sloths are a large animal that spends almost all of its time up trees, hanging from branches by its large curved claws. Sloths sleep for around 18 hours a day. They move very slowly - around 1-5 feet per minute.
They are related to armadillos and anteaters.

Sloth is the sin of laziness and indifference; not even caring about doing anything.

Snails move very slowly. If you take a very long time to finish doing something, you are slow. The opposite of slow is fast.

Slugs can be found on land and in the water, both freshwater and the sea. They are very similar to snails but slugs don't have a shell, and in fact any land mollusc without a shell can be called a slug. Since they have nowhere to hide inside and can dry out, slugs usually live in moist or wet places.