noun
(ichthyology, countable) Any predatory fish of the superorder Selachimorpha, with a cartilaginous skeleton and 5 to 7 gill slits on each side of its head.
(uncountable) Flesh of this animal, consumed as food.
(paleontology, loosely) Any fish of the class Chondrichthyes, especially an extinct shark-like holocephalian.
A freshwater fish that resembles a true shark (Selachimorpha) in appearance or movement; a freshwater shark.
(countable) A noctuid moth of species Cucullia umbratica.
(UK, university slang, countable) A university student who is not a fresher that has engaged in sexual activity with a fresher; usually habitually and with multiple people.
verb
(intransitive, rare) To fish for sharks.
(UK, university slang, mildly derogatory) Of a university student who is not a fresher (first-year undergraduate), and especially towards the start of the academic year:
noun
Someone who exploits others, for example by trickery, lies, usury, extortion.
(informal, derogatory) A sleazy and amoral lawyer.
(informal, derogatory) An ambulance chaser.
(informal) A relentless and resolute person or group, especially in business.
A person that excels in a particular field.
(sports and games) A person who feigns ineptitude to win money from others.
verb
(obsolete) To steal or obtain through fraud.
(obsolete, intransitive) To play the petty thief; to practice fraud or trickery; to swindle.
(obsolete, intransitive) To live by shifts and stratagems.
verb
(obsolete) To pick or gather indiscriminately or covertly.