Meaning

noun an employee of a bank who receives and pays out money

noun a person responsible for receiving payments for goods and services (as in a shop or restaurant)

verb discard or do away with

originFrom Dutch casseren, kasseren, from Old French casser (“to break (up)”). During a ceremonial cashiering of a ranking military officer, the breakup was often symbolized dramatically by literally breaking the officer’s sword.

Etymology from Wiktionary, CC BY-SA 3.0