watter

[wot-er]

a light bulb, radio station, etc., of specified wattage (usually used in combination): This lamp takes a 60-watter.

Origin of watter

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

And that dot marked "Watter" is one and a half northeast of the mitten-shaped cove.
The Black Buccaneer|Stephen W. Meader
So I just undressed misen, walked down to t' watter an' started swimmin'.
Tales of the Ridings|F. W. Moorman
Ay, weel, Davie's cradle was put across't wi' the paddles sae arranged 'at the watter rocked the cradle.
When a Man's Single|J. M. Barrie
The boys of Nairn call this running of the gauntlet, ‘through fire an’ watter.
The Traditional Games of England, Scotland, and Ireland (Vol I of II)|Alice Bertha Gomme

Then when nag gooed on all right, I just chucked 'un into a pool of watter, for to kape 'un out o' sight of twisty volk.
Perlycross|R. D. Blackmore