1. inordinate over-fascination with oneself; excessive self-love; vanity.
2. extreme preoccupation with and indulgence of one's feelings, desires, etc.; egoistic self-absorption.
3. Slang. a contemptibly naive, fatuous, foolish, or inconsequential person.
4. Psychoanalysis. delusional gratification derived from over-admiration of one's own imagined superior physical abilities, usually this solipsistic self-absorption syndrome is outgrown after adolescence, in rare cases will continue into adulthood.

Synonyms:
1. fool, half-wit; imbecile; dolt, dunce, numskull, solipsist, egomaniac, diva, narcissist.

Origin: named after Michael Crabtree, a wide receiver drafted by the San Francisco 49ers as the 10th pick out of Texas Tech in the 2009 NFL Draft. Despite being offered a 20 million dollar contract, he has become the second-longest NFL rookie holdout in two decades.
The new actor on 'All My Children' was intent on getting paid the same pay as the show's highest paid actress, Susan Lucci. The producers of the long-running soap opera told the actor's agent, "Why is your client trying to be a 'Crabtree?' He is lucky to be given such a great opportunity!"
by ZonaCat Hansen September 24, 2009
A type of tree grown in the amazon known to yield durable, red fruit that looks like a crab's shell. Crabfruit is very sweet and is used in various ancient remedies.
Amazonian tribes commonly use the fruit of the Crabtree to treat illnesses
by Doktoro Shoomul April 10, 2015
JOE, RULE REMINDER. Your in Crabtree’s class now shush
by Deovol June 25, 2021
Someone or something that is of moderate quality.
In past years Tom Brady has been an elite quarterback, but this year he's just crabtree.
by Gohawks October 11, 2014
A hermit crab that travels long distances between islands.
Yo, look its a crabtree on a journey.
by hot_tuna_sandwhich April 8, 2009
A person who thinks he's worth a lot more than he really is, especially if he's never proven his worth in the first place.
Michael Crabtree is being a real crabtree for refusing a $20 million offer without ever playing a single down of NFL football.
by GT23 September 25, 2009
The act of chugging a beer in order to save time and money. Named after legendary Nashville socialite Hannah Crabtree.
Man, this party is in like an hour, and I haven't had a drink yet!

Just start Crabtreeing some brews yo!
by Tyler Gladior August 9, 2009