Sailed, but not under sail (7)
I believe the answer is:
steamed
'sailed but not under sail' is the definition.
The definition and answer can be both to do with motion as well as being past participle verbs.
Maybe they are linked in a way I don't understand?
This is the entire clue.
Can you help me to learn more?
(Other definitions for steamed that I've seen before include "Cooked over hot water" , "Cooked in vapour" , "Proceeded with course" , "cooked a certain way" , "Cooked over boiling water" .)