From Longman Dictionary of Contemporary Englishseagullsea‧gull /ˈsiːɡʌl/ noun [countable] 
HBBa large common grey or white bird that lives near the sea
HBBa large common grey or white bird that lives near the seaExamples from the Corpus
seagull• He held out one fat arm and tried to catch a seagull flying low.• A seagull shrieks at you out of the blue.• There are seagulls, he says, and terns and storks and cockatoos.• As Ruth tried to find an answer, a faint lost crying sounded far above, like seagulls.• We were woken at the crack of dawn by the pitter patter of seagulls as they pecked for their breakfast.• I ... I ... Look at that seagull up there. 