Definition
the fast lane (of a highway): the part (of a highway) reserved for vehicles going at high speed
fast: quick, rapid, speedy
Still unsure of the best way to use 'Fast line'? Improve your English thanks to our online English lessons. We offer a free test as well as a free level assessment!
What our users say:
Test your English with Gymglish today and get a free level assessment
Absolutely free - no strings attached.