Crash Course

Meaning:
A quick and intensive course of instruction.

Example:
She decided to take up a crash course in cooking before her wedding day.

Did you know?
There isn’t a consensus as to where this term originates from. However, out of all the available explanations, we like this one the best.

The term ‘crash course‘ stems from the term ‘crash land’ in which a landing has to be made, in unfavourable circumstances. Likewise, a crash course implies that there is an urgent need to learn something regardless of the circumstances.