Gentle as a nurse? (6)
I believe the answer is:
tender
I believe this clue is a double definition.
'gentle' is the first definition.
(similar in meaning)
'a nurse?' is the second definition.
(a nurse tends to patients)
'as' acts as a link.
(Other definitions for tender that I've seen before include "Hurting" , "carer's > inexperienced" , "Dinghy towed by a yacht" , "requiring careful handling" , "Loving, not tough" .)