This is the 13549th most frequent Spanish word.
renglón
A "renglón" is a line of text or writing.
Here, 'renglón' refers to a written or printed line on a piece of paper, used in a literal manner.
Escribe en el primer renglón de la hoja.
Write on the first line of the page.
In this usage, 'renglón' identifies a line of text in a book, emphasizing its content and placement.
El último renglón del libro tiene un mensaje importante.
The last line of the book contains an important message.
'Renglón' is used metaphorically here to describe a conceptual alignment, akin to 'line' used figuratively in English.