Guardian Prize Crossword 9D

[Bramcotess]

Please can anyone help solve this clue?
Person tripping over hat's cracked a heavy blow (12)

[donny48]

holidaymaker

[donny48]

o(ver) lid (hat) (in) haymaker (heavy blow)
def.= person tripping = holiday maker

[Bramcotess]

Thank you Donny. How obscure is that!!

[donny48]

You're welcome