spaller noun2 •A tool used to remove concrete.Concrete floors and walls can be mechanically decontaminated by removing the contaminated surface layer (1 to 2 inches) using surface grinders, spallers, or pneumatic drills. — 1982 •A person who breaks down stone into smaller pieces.In 1919, the weekly margin above the living wage for the "all others" item was 6s., though the spallers then received 9s. a week margin and the millhands only 3s. — 1942 formsspallers
