DuckCorp Dico

Found one definition

1.                 From English-日本語 (にほんご) FreeDict+WikDict dictionary ver. 2022.11.18:
                   
   
   
                   
                     
   header //ˈhɛdə// //ˈhɛdɚ// <n>
   1. ヘッダ
   (computing) the first part of a file or record that describes its contents
   2. ヘディング
   soccer: act of hitting the ball with the head
   3. ヘッダー 2.
   text used to mark off a quantity of text
    3.
   upper portion of a page layout