名詞 mailer:

1. United States writer (born in 1923)
   同義詞：Norman Mailer
2. a person who mails something
3. an advertisement that is sent by mail
4. a container for something to be mailed

1. A cardboard book mailer.
   一個(gè)供寄書用的硬紙筒

mail.er

n.（名詞）
One that uses the mails:
使用郵政系統(tǒng)的人：
例句：
large commercial mailers.
大商業(yè)郵政使用者

One who addresses, stamps, or otherwise prepares mail.
寄信人：寫地址、蓋郵票或以其他方式準(zhǔn)備郵件的人
A container, such as a cardboard tube, used to hold material to be mailed:
包裝郵件的東西：用來(lái)裝盛郵件并發(fā)送出去的容器，例如硬紙板箱：
例句：
a cardboard book mailer.
一個(gè)供寄書用的硬紙筒

An advertising leaflet included with a letter.
附在信內(nèi)的廣告印刷品