stool  
noun [ C ] uk/stuːl/ us/stuːl/
  (SEAT)      
 B2 凳子
a seat without any support for the back or arms
  a bar/kitchen/piano stool 吧台/厨房/钢琴凳 
 a three-legged stool 3条腿的凳子 
 See also: footstool
 - More examples
- a three-legged stool
- We perched on bar stools and had a beer.
- She fell off her stool.
- She was sitting on a stool, a drink in her hand.
- We've just bought some stools for the kitchen.
  (EXCRETION)      
 medical specialized粪便 
a piece of solid waste from the body
  He told the doctor he had been passing bloody stools. 他告诉医生他便血。