| single |
When there is only one of something, we call it a single thing. [3 definitions] |
| singular |
The word "book" is singular. The word "books" is not singular. When we say "book," we are talking about only one book. People understand this because there is no "s" at the end of the word. When we are talking about only one thing of a certain kind, we use a singular word. |
| sink |
A sink is a large bowl that is connected to pipes so that water can come in and go out of it. Sinks are often found in bathrooms and kitchens. [2 definitions] |
| sip |
When you sip a drink, you drink it slowly and a little at a time. [2 definitions] |
| siren |
A siren is something that makes a loud noise and is used by vehicles like police cars and fire trucks. |
| sister |
Your sister is a girl or woman who has the same mother or father as you. |
| sit |
When you sit, you rest the lower part of your body on a chair or something else. [3 definitions] |
| situation |
A situation is what is happening to you or around you at a particular time. A hard situation for many children is being a new kid in school. A dangerous situation for all people is being outside near trees when there is lightning. |
| six |
Six is the word for the number 6. |
| sixteen |
Sixteen is the word for the number 16. |
| sixteenth |
If fifteen people raise their hands, the next person to raise their hand will be the sixteenth person. |
| sixth |
The sixth person comes next after the fifth person. [2 definitions] |
| sixtieth |
If a farm has fifty-nine cows, the next cow that the farmer gets will be the sixtieth cow on the farm. |
| sixty |
Sixty is the word for the number 60. |
| size1 |
The size of an object is how big or how small it is. [2 definitions] |
| skate1 |
A skate is a shoe with a blade or a set of small wheels attached to the bottom. Skates are used to move on ice or other hard surfaces. [2 definitions] |
| skateboard |
A skateboard is something you can ride. It is a narrow, flat board that has four wheels on the bottom. You ride a skateboard by standing on it. Sometimes you push it with one foot to make it go. [2 definitions] |
| skeleton |
A skeleton is the set of bones in your body or in an animal's body. There are 206 bones in the skeleton of an adult human. |
| ski |
A ski is a long, narrow, and very smooth board. You attach a pair of skis to special boots and use the skis to travel easily over snow. [2 definitions] |
| skiing |
Skiing is the activity or sport of moving over snow on skis. Skis are long and narrow boards that you attach to a special pair of boots. The skis are very smooth so that they move over snow very easily. |
| skill |
When you have a skill, you have the ability to do something well. You improve a skill by practicing. |