1 Urban Dictionary is a Web-based dictionary of slang words and phrases. , the site contains over 5.01 million definitions. Submissions are regulated by volunteer editors and rated by site visitors. ( by far my favourite one â click here and check out why)
Definition of pin (all) one's hopes on. : to hope very much that (something) will help one or allow one to succeed cancer patients pinning their hopes on a new drug You shouldn't pin all your hopes on getting the job. Word by Word Definitions. Seen and Heard.
1. a pin, point, or short shaft on the end of which something rests and turns, or upon and around which something rotates or oscillates. 2. the end of a shaft or arbor, resting and turning in a bearing. 3. a person or thing on which something turns, hinges, or depends: She was the pivot of the campaign's success. 4. the person in a line, as of troops on parade, whom the others use as a point around which to wheel or maneuver. 5. a whirling around on one foot.