Topic: CONSTRUCTION
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prim‧er

1 [uncountable and countable]TBC paint that you put on the surface of wood, metal etc before you put on the main layer of paint
2 [countable]PMW a tube that contains explosive and is used to fire a gun or explode a bomb
3 [countable] American English a book that contains basic information about something
4 [countable] old-fashionedSES a school book that contains very basic facts about a subject
