Queen caught by pelican, neatly (4)
I believe the answer is:
anne
'queen' is the definition.
(Queen Anne, 18th-century queen)
'caught by pelican neatly' is the wordplay.
'caught by' says the answer is hidden in the clue.
'ANNE' can be found hidden inside 'pelican neatly'.
(Other definitions for anne that I've seen before include "First queen of Great Britain and Ireland" , "One of two Henry VIII wives" , "Stuart queen" , "Shakespeare's wife's name" , "23's sister" .)