Words that start with S

A silo is a large cylindrical structure for storing a large amount of something. Silos are most often seen near farms for storing grain, but can also be used to store coal, wood chips or even missiles.

Silver is a soft, shiny metal that can be polished to be highly reflective. It tarnishes easily, however. Silver is very conductive and today is used electrical components. Silver is widely used for making jewellery, and was used for making tableware like knives and fork. As pure silver is so soft, most practical items made from silver are made from an alloy of silver and another metal like copper.

Silverfish, also called fishmoths, are small insects with no wings. They grow to be about an inch long. Silverfish like to live in dark, sometimes damp places, like kitchen cupboards, bathrooms, and wardrobes. They will eat glue, books and book bindings, paper, photos, sugar, hair, and dandruff.

Something is simple if it doesn't have a lot of elaborate parts, or is very easy to understand. The picture is of a very simple flower arrangement.
The opposite of simple might be elaborate, complicated or difficult.

Single is used to describe just one of something or someone. For example, if you're not in a relationship, you can say you're single.

If you are sinister you are frightening, threatening or intimidating.

The house in the picture is sinister.

You sip a drink when you drink only a very small amount at a time. When you sip your drink, you tend to drink it very slowly.

Sis is short for sister.

You sit down when you put most of your weight on your bottom, on a surface like a chair or sofa. Sitting down is usually more comfortable than standing up.

Something is sixth if it is the number sixth item in a list. Sixth comes after fifth and before seventh.