spend‧er /ˈspendə $ -ər/ BrE AmE noun [countable]
someone who spends money ⇨ saver:
The new casino hopes to attract big spenders (=people who spend a lot of money).
[spe̱ndə(r)] spenders N-COUNT: usu adj N
If a person or organization is a big spender or a compulsive spender, for example, they spend a lot of money or are unable to stop themselves spending money. The Swiss are Europe's biggest spenders on food... Once the compulsive spender stops at the mall, she will be unable to control her spending.
spend·er /ˈspɛndɚ/ noun, pl-ers[count] : a person who spends money • The restaurant gives the big spenders [=people who spend lots of money] special treatment.