Noah Webster's New International Dictionary of the English Language

1. (n.) One who collect customs; a toll gatherer.

2. (n.) One who regularly or repeatedly makes purchases of a trader; a purchaser; a buyer.

3. (n.) A person with whom a business house has dealings; as, the customers of a bank.

4. (n.) A peculiar person; -- in an indefinite sense; as, a queer customer; an ugly customer.

5. (n.) A lewd woman.