lower-case letter

1. Mean line: Imaginary line which runs along the top of the lower-case letters in a line of text. It is one of the construction lines needed for letter design.
   中间线：在一行英文字里，沿着小写字母上端的一条假想线条。它是字体设计所需的结构线之一。

noun

1. the characters that were once kept in bottom half of a compositor's type case

   Synonym:    small letterlowercaseminuscule