Placed at the beginning.

置于开端的；在前的。

Marking, or pertaining to, the beginning.

开始的；开端的。

A letter at the beginning of a word, paragraph, etc.

字的起首字母；章节开端的字母。

The first letters of a person's name placed separately.

姓名的起首字母。

To mark, or sign, with an initial or initials.

签名的首字母。