/ˈpraɪmər/
primer
BrE /ˈpraɪmə(r)/
NAmE /ˈpraɪmər/
[U, C]
a type of paint that is put on wood, metal, etc. before it is painted to help the paint to stay on the surface
[C]
BrE /ˈpraɪmə(r)/
NAmE /ˈprɪmər/
(NAmE)
a book that contains basic instructions
The President doesn’t need a primer on national security.
[C]
BrE /ˈpraɪmə(r)/
NAmE /ˈprɪmər/
(old-fashioned)
a book for teaching children how to read, or containing basic facts about a school subject