Doctor a fluid that someone will swallow (5)
I believe the answer is:
drink
'swallow' is the definition.
(I've seen this before)
'doctor a fluid that someone' is the wordplay.
I cannot quite understand how this works, but
'doctor' could be 'dr' (abbreviation) and 'dr' is located in the answer.
'fluid' could be 'ink' (ink is a kind of fluid) and 'ink' is located in the answer.
No letters remain.
This explanation may well be incorrect...
'will' acts as a link.
Can you help me to learn more?
(Other definitions for drink that I've seen before include "Beverage - alcohol" , "Liquid refreshment" , "Consume alcohol" , "Sup" , "Booze" .)