tileboard

noun

1

: a board used in interior finishing and made from a large sheet of any of various materials having a decorative coating simulating a tiled surface

2

: a thin large square piece (as of wood) often with beveled edges that is fitted together with other like pieces to cover ceilings or walls

Love words?

You must — there are over 200,000 words in our free online dictionary, but you are looking for one that’s only in the Merriam-Webster Unabridged Dictionary.

Start your free trial today and get unlimited access to America's largest dictionary, with:

• More than 250,000 words that aren't in our free dictionary
• Expanded definitions, etymologies, and usage notes
• Advanced search features
• Ad free!