They may run out in time (5)
I believe the answer is:
sands
This might be a double definition.
'they' is the first definition.
Both the answer and definition are plural nouns.
Maybe you can see an association between them that I don't see?
'run out in time' is the second definition.
Although both the answer and definition are singular nouns, I cannot understand how they can define each other.
'may' acts as a link.
Can you help me to learn more?
(Other definitions for sands that I've seen before include "Rubs smooth" , "Beach" , "Beaches" , "They run out (of time)" , "The Goodwin - -" .)