n.[C]

1. 识字课本，初级课本
2. 入门书，初学者读本，初阶
   I borrowed from the library a primer of phonetics.

   我从图书馆借了一本语音学入门书。

   If you are completely a layman on this, here is a primer that you can read.

   如果你真的完全是个门外汉，这里有一本入门书你可以先读一下。

3. 【古】（儿童的）识字祈祷书

n.

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.

n.