Temperature that can be caught (4)
I believe the answer is:
cold
This clue is a double definition.
'temperature' is the first definition.
(I know that cold is a type of temperature)
'that can be caught' is the second definition.
(a cold can be caught)
(Other definitions for cold that I've seen before include "Glacial" , "Nippy" , "Common ailment" , "Biting" , "Unemotional; wintry" .)