Words that start with S

A stain is a mark made on something that is very difficult to remove. Sometimes stains are accidental, like the ink stain on the clothes in the picture, and sometimes stains are put on something to change the color on purpose.
Cheap, light colored wood like pine is often stained to look like a darker, more expensive wood.

Stairs are made out of lots of steps that you can climb to get somewhere higher. If you are in a tall building or a double storey house there will be a staircase so you can get to the next floor up.
If a building has too many floors for someone to walk all the way up without getting tired, it will have an elevator or lift to take you to another floor.

Stalactites are formed when water that has a lot of minerals dissolved in it drips through the roof of a cave and some of the minerals are left behind. Over a long time, the mineral deposits form into spikes hanging from the ceiling of the cave.
Where water drips from a stalactite, stalagmites form.

Stale means that something, especially food, has gone bad or become old. The opposite of stale is fresh.

Stale bread is good to feed to birds.

A stalk is a very thin branch, usually holding up flowers.

Another word for stalk is stem.

A stallion is a male horse.

A stamp is a small piece of paper that is worth money. You use stamps to pay to have letters and parcels posted. Every country has their own different stamps, and lots of different designs and pictures on all their different stamp denominations.

Stance is another word for position, the way your body is posed when moving a particular way. The dog in the picture is in a playful stance.

You stand up when you have only your feet touching the ground, and you are upright and vertical.

A staple is a small piece of wire that is put in place by using a stapler. Staples are used to hold things together, usually pieces of paper.