gull

definition: mostly white aquatic bird having long pointed wings and short legs
example:
speech part: noun
synonyms: seagull sea gull
definition: a person who is gullible and easy to take advantage of
example:
speech part: noun
synonyms: mark
definition: fool or hoax
example:
speech part: verb
synonyms: cod put on slang fool dupe take in befool put one over put one across
definition: make a fool or dupe of
example:
speech part: verb
synonyms: befool

How gull is being used?