Buckle up to fasten the belt that…. Find out the historical background, synonyms, antonyms, and common mistakes of this expression. Learn how to use the idiom "buckle up" in different contexts, such as driving, flying, or working. See full list on grammarist. com Buckle up can mean to fasten a seatbelt or to prepare for something exciting or intense. Learn the origin, usage and examples of this idiom and phrasal verb. The meaning of BUCKLE UP is to fasten one's seat belt. to fasten the belt that keeps you in your seat in a car or a plane: 2. When you buckle up in a car or a plane, you fasten your seat belt. [informal]. Learn the meaning and usage of the phrase "buckle up" in different contexts, such as fastening a seat belt, securing something with a strap, or preparing for something. Click for English pronunciations, examples sentences, video. . BUCKLE UP definition: 1. See examples, synonyms, and related expressions. Learn more. Examples are automatically compiled from online sources to show current usage. lojnzcnibgxxjukxmcvxrlngjispcatrhmjksmxvxuv