stool 
/ˈstu:l/ noun
plural stools /ˈstu:l/ noun [count] 1 a : a seat that fits one person and that has no back or arms
▪ She sat on a stool. ▪ a bar stool ▪ a piano stool
b : a piece of furniture that supports the feet of a person who is sitting : footstool 2 medical : a piece of solid waste that is released from the body
▪ The patient had bloody/loose/hard stools. ▪ a stool sample ▪ stool softener [=a medicine that makes it easier to discharge bodily waste]
▪ She sat on a stool. ▪ a bar stool ▪ a piano stool
b : a piece of furniture that supports the feet of a person who is sitting : footstool
▪ The patient had bloody/loose/hard stools. ▪ a stool sample ▪ stool softener [=a medicine that makes it easier to discharge bodily waste]
