Crossword Genius

Waltz across the Channel? (5)

Ross

I believe the answer is:

valse

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

'waltz' is the definition.
('valse' can be a synonym of 'waltz')

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for valse that I've seen before include "Dance" , "Steps taken in France" .)

I've seen this clue in the Evening Standard.
Want a hint initially instead of a full solution? Install my app