A male given name from Hebrew. / (biblical) A minor prophet who was cast into the sea and swallowed by a great fish. / A book of the Old Testament and the Hebrew Tanakh.

(nautical, slang) A person who brings a ship bad luck. / (slang, by extension) Any person or object which is deemed to cause bad luck; a jinx.

plural of Jonah

Cancer borealis, a strong-clawed crab found on the Atlantic coast of North America.

plural of Jonah crab

(Internet slang) The situation in which a user who has been trolled claims that he/she only posted in order to bait the troll into a response.