Tend, care for (5)
I believe the answer is:
nurse
I believe this is a double definition.
'tend' is the first definition.
(as in tending or nursing a patient)
'care for' is the second definition.
(nursing is a kind of caring for)
(Other definitions for nurse that I've seen before include "One tending the sick" , "Hospital employee" , "Suckle" , "Hospital tender" , "Patient tender" .)