Go back and forth with energy in choppy seas approaching start of winter
I believe the answer is:
seesaw
'go back and forth' is the definition.
Although both the answer and definition are verbs in their base form, I can't see how one could define the other.
'energy in choppy seas approaching start of winter' is the wordplay.
'energy' becomes 'e' (physics symbol as in E=mc2).
'in' means one lot of letters goes inside another.
'choppy' indicates an anagram.
'approaching' is a charade indicator (letters next to each other).
'start of' indicates taking the first letters.
The initial letter of 'winter' is 'w'.
'seas' is an anagram of 'sesa'.
'e' inserted within 'sesa' is 'seesa'.
'seesa'+'w'='SEESAW'
'with' acts as a link.
Can you help me to learn more?
(Other definitions for seesaw that I've seen before include "Oscillate" , "entertainment for children" , "Lurch up and down" , "Piece of playground equipment" , "having to move from one extreme to the other" .)