Boss with a cold: he gets this? (8)
I believe the answer is:
headache
'this?' is the definition.
The definition suggests a singular noun which matches the answer.
'boss with a cold he' is the wordplay.
'boss' becomes 'head' (synonyms).
'with' says to put letters next to each other.
'cold' becomes 'c' (eg on taps).
'head'+'a'+'c'+'he'='HEADACHE'
'gets' is the link.
Can you help me to learn more?
(Other definitions for headache that I've seen before include "A pain in the brain" , "Informally a worrying problem - take an asprin" , "Cause of worry/trouble" , "Worry, trouble (colloq.)" , "Pain in the cranium" .)