baseboard

[ beys-bawrd, -bohrd ]

/ ˈbeɪsˌbɔrd, -ˌboʊrd /

Also called mopboard, skirt. a board forming the foot of an interior wall.

a board forming the base of anything.

Origin of baseboard

An Americanism dating back to 1850–55; base¹ + board

Other features include True Radiant, which compensates for the longer time it takes for baseboard systems to adjust temperatures.

How the Nest Thermostat Could Save the Planet |Daniel Gross |July 25, 2013 |DAILY BEAST
Where the baseboard was mortised at the corner there appeared to have been a patch put in.

Ted Strong's Motor Car |Edward C. Taylor
Two sideboards were nailed to a baseboard, making a trough large enough for Fig. 303.

The Scientific American Boy |A. Russell (Alexander Russell) Bond
The slot in the small end of the baseboard is for the film to pass through.

The Boy Mechanic, Book 2 |Various

Lying flat along the baseboard, he would be stabbed at any instant by an inquiring sword point.

The Radiant Shell |Paul Ernst
He put his face close to the floor and found the aperture, a small hole of irregular shape in the baseboard of the door.

The Secret Witness |George Gibbs

baseboard

/ (ˈbeɪsˌbɔːd) /

a board functioning as the base of anything

Also called: skirting board US and Canadian a skirting made of wood