~ 1
■ noun
1》 a substance painted on wood, metal, etc. as a preparatory coat.
2》 a cap or cylinder containing a compound which ignites the charge in a cartridge or explosive.
3》 a small pump for priming an engine.
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~ 2
■ noun a book providing a basic introduction to a subject or used for teaching reading.
Origin
ME: from med. L. primarius (liber) 'primary (book)' and primarium (manuale) 'primary (manual)'.