Definitions
1.verbTo make or become blue.
2.verbTo treat the surface of steel so that it is passivated chemically and becomes more resistant to rust.
3.verb(laundry) To brighten by treating with blue (laundry aid)
4.verbTo spend (money) extravagantly; to blow.
5.nounAn indigo material used as a laundry aid to counteract yellowing