Either a male human that is half-cat(thus having cat ears, a cat tail, and paws) or a male cat that is half human(thus standing upright and having slightly more human anatomy.)
Sometimes also used to refer to a male that acts like a cat.
"My boyfriend is such a catboy..."

"Do you like stories with catboys?"
by Psychosis Poet November 24, 2004
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A boy that wears cat ears and acts like a cat or any boy named martin
That boy named martin is a catboy.
by lasagnagarfield August 21, 2021
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basically a man or a he/they non-binary. who dresses up like a cat, people will often say that they're a furry, but no. they're a catboy.
girl 1: i think that catboy is pretty cute boy1: me too!
someone:ew catboys are such furrys! boy1: no they aren't, first of all there's nothing wrong with being a furry, and second, they're just a ''normal'' person like you and me, they just wear cat ears and sometimes tails.
by toby ッ October 29, 2020
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Used to describe a gentleman that on a night out attracts a lady or ladies only to bring them back home and loose interest. Similar to the actions of a feline that might return with quarry to leave it upon the door mat.

To act with the attention span of a knat.

One who emulates a feline in pursuit of partners.
I see he is being his usual catboy self, bringing back birds and doing nothing with them.
by maxbadger October 24, 2010
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George Davidson (born: November 1, 1996 age 24), better known online as GeorgeNotFound ( Also Known as Gogy formerly GeorgeeeHDPlays), is a British YouTuber known for creating Minecraft videos. He frequently collaborates with fellow Minecraft YouTubers Sapnap, BadBoyHalo, and Dream, and is part of the Minecraft Dream SMP server along with other popular streamers and YouTubers.
person 1: wow gogy is such a catboy
person 2: yeah hes just a little meow meow
by catboygeorgetruther February 18, 2021
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One who practices erotic love making to the feline family
Bavetta is a fucking catboy.
by rydawg January 23, 2004
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