root

noun
UK /ruːt/
US /ruːt/

The part of a plant that grows under the ground and drinks up water.

The tree's roots spread deep into the soil.


OTHER MEANINGS

2. The part of a tooth or hair that is under the skin.

The dentist checked the root of my tooth.

3. The main cause or beginning of something.

Money is often the root of many arguments.

4. A word part that is the base of other words.

The root of 'helpful' is 'help'.

5. To cheer loudly for a team or person.

We always root for our school's soccer team.