[wel-hed] 
| 1. | a fountainhead; source. |
| 2. | Also called wellhouse. a shelter for a well. |
| 3. | the assemblage of equipment attached to the opening of an oil or gas well. |
| 4. | noting or pertaining to petroleum, natural gas, etc., at the place and time at which it leaves the ground: a wellhead price. |
