Could a toad sit on one? (5)
I believe the answer is:
stool
'one?' is the definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
I cannot understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for stool that I've seen before include "Motion" , "Backless chair" , "Seat without a back" , "place butt on one?" , "Three-legged backless seat" .)