8 letters · 12 points in Scrabble
noun a strong hard building material composed of sand and gravel and cement and water
verb cover with cement
verb form into a solid mass; coalesce
originBorrowed from Latin concrētus, past participle of concrescō (to curdle) from con- (with, together) + crescō (to grow, rise).
Etymology from Wiktionary, CC BY-SA 3.0