Secure lab location: in this country, nothing's lower (5,3)
I believe the answer is:
glove box
'secure lab location in this country' is the definition.
The definition suggests a singular noun which matches the answer.
'nothing's lower' is the wordplay.
I cannot quite understand how this works, but
'nothing' could be 'love' (love means zero in tennis) and 'love' is present in the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for glove box that I've seen before include "Coach may have it" , "Car storage compartment" , "Compartment under the dashboard" .)