Old schoolbook Synonyms

Definitions for Old

(adjective) being of advanced years and especially past middle age
(adjective) dating or surviving from the distant past
(adjective) having been such at some previous time

OS abbreviation

OS is an abbreviation for Old Schoolbook

What does OS stand for?

OS stands for "Old Schoolbook"

Schoolbook replaced

old reference

old assignment

Definitions for Schoolbook

(noun) a book prepared for use in schools or colleges