Many swimmers love to lash out wildly! (5)
I believe the answer is:
shoal
'many' is the definition.
(thesaurus)
'swimmers love to lash out wildly' is the wordplay.
I cannot quite see how this works, but
'love' could be 'o' (In tennis, 'love' means 'zero') and 'o' is found in the answer.
an anagram of 'lash' is 'shal' which is within the left over letters.
This accounts for all the letters.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for shoal that I've seen before include "Lots of fish" , "Mob" , "shallow water" , "Large group of fish - sandbank" , "School of fish" .)