welling Definition

1. A lined shaft that is sunk from ground level to a considerable depth below ground in order to obtain a supply of water, oil or gas, etc.
2. A natural spring of water, or a pool fed by it.

Thesaurus: waterhole, fountain, spring, pool, source.
3. A shaft, or shaft-shaped cavity, eg that made through the floors of a building to take a staircase or lift.

Example: stairwell
4. naut.
An enclosure in a ship's hold round the pumps.
5. A reservoir or receptacle.

Example: inkwell
(Brit)
6. law.
The open space in the centre of a law court.
7. A plentiful source of something.

intr
welled, welling
1. Said of a liquid: to spring, flow or flood to the surface.

Thesaurus: spring, flow, gush, swell, rise, brim over, stream, flood, seep, trickle.
Form: well up (often)