well-head noun. ['wɛlhɛd] ME.
[from WELL noun¹ + HEAD noun.]
1. The place at which a spring breaks out of the ground; the source of a stream or river, a fountain-head. Freq. fig., a source of anything. ME.
■ E. Pagitt Oxford, and Cambridge, two Well-heads of Divinity.
b. A spring in a marsh. Scot. E19.

2. The top of a draw-well; a structure erected over this. E17.
b. A structure erected over an oil- or gas-well. Freq. attrib. M20.

[TahlilGaran] English Dictionary ▲