To pour or sprinkle water over (a plant or area of ground), typically in order to encourage growth. She remembered to water the plants every morning.
To supply a place or animal with water. The farmer watered the cattle at the trough.
To dilute or weaken a liquid by adding water. He watered down the juice to make it less sweet.
To secrete or produce water or a watery fluid, as from the eyes. Her eyes began to water from the cold wind.
(of the mouth or eyes) to fill or become filled with a fluid, especially saliva or tears. The aroma of fresh bread made his mouth water.