How is “to boot” used?

In The Sisters Brothers (2018), one line is: “Your pockets are full to boot.”

Which movie is “to boot” from?

The clip at the top of this page is from The Sisters Brothers (2018).

Idiom

used to add a comment to sth that you have said

humorous · old-fashioned · Heard in 78 movies

used to add a comment to sth that you have said
He was a vegetarian, and a fussy one to boot.

Definitions from the Oxford Advanced Learner's Dictionary, 9th edition

Your pockets are full to boot.

Said in 8 films · #1