In each of the examples, the words when considered individually
don't make a lot of sense with the others that surround them. One
drives a car, not a bargain, and yet we understand the sentence
"You drive a hard bargain" because we don't just focus on each
individual word. The sentence's meaning becomes clear when its
words are read together as a unit. That suddenly comprehensible
unit is called an idiom. Similarly, it makes no sense to be "under
the weather"; the weather doesn't cut off at some physical point
that you can stand under. Nor is there any reason why this phrase
would describe an illness, but it does, and we know it does,
because we're familiar with the idiom.
Test Prep Lessons With Video Lessons and Explained MCQ
Large number of solved practice MCQ with explanations. Video Lessons and 10 Fully explained Grand/Full Tests.