the part of a plant, tree etc in the ground and which takes water and food from the soil
base, core
Cases of word usage
1) a round, thick root of some plants (bulb)
2) (a kind of tropical plant with) a starchy root eaten as food (cassava)
3) (a plant with) a hot-tasting root used in cooking and for making a kind of wine; a light reddish-yellow colour (ginger)
4) one of the parts (usually green and flat) growing from the side of a stem or branch or direct from the root of a tree, bush, plant etc (leaf)
5) a number (e.g. root square of 17) or equation that cannot be expressed using ordinary numbers (surd)
