Lowered oneself to safety (6)

I believe the answer is:

ducked

I'm a little stuck... Click here to teach me more about this clue!

'lowered' is the definition.
The answer and definition can be both to do with motion as well as being past participle verbs.
Perhaps you can see a link between them that I don't see?

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for ducked that I've seen before include "was plunger?" , "Bobbed down" , "Dipped" , "Avoided as mallard might" , "Bowed head to avoid missile" .)

I've seen this clue in the Evening Standard.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.