In which the spectators have no seats? (5)
I believe the answer is:
stand
'seats?' is the definition.
(stand is a kind of seats)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for stand that I've seen before include "group of trees" , "Rise; bear" , "Platform; attitude" , "Be likely to rise" , "Remain unaltered, tolerate" .)