Launch hotel web address (4)
I believe the answer is:
hurl
'launch' is the definition.
(I've seen this before)
'hotel web address' is the wordplay.
'hotel' becomes 'h' (phonetic alphabet: alpha, bravo, charlie etc.).
'web address' becomes 'url' (I've seen this in other clues).
'h'+'url'='HURL'
(Other definitions for hurl that I've seen before include "Throw hard" , "Play with a sliotar" , "Throw forcibly" , "Throw violently" , "Launch" .)