Optional storybook Synonyms

Optional replaced

open storybook

Definitions for Optional

(adjective) subject to one's freedom of choice
(adjective) possible but not necessary; left to personal choice

OS abbreviation

OS is an abbreviation for Optional Storybook

What does OS stand for?

OS stands for "Optional Storybook"

Storybook replaced

optional title

Definitions for Storybook

(noun) a book containing a collection of stories (usually for children)