Charm everybody at the waterside (6)
I believe the answer is:
allure
'charm' is the definition.
(I've seen this before)
'everybody at the waterside' is the wordplay.
'everybody' becomes 'all' (all people).
'at' means one lot of letters go next to another.
'the waterside' becomes 'ure' (I am not sure about this - if you are sure you should believe this answer much more).
'all'+'ure'='ALLURE'
Can you help me to learn more?
(Other definitions for allure that I've seen before include "Glamorous appeal" , "Powerful attraction" , "Enchanting attractiveness" , "What siren may do" , "The power to entice or attract" .)