An Idiom
An idiom is a common phrase or expression with a figurative meaning. You cannot understand it just by looking at the literal definitions of the individual words; instead, the phrase must be learned and understood as a whole.
A blessing in diguise
A good thing that seemed bad at first
Beat around the bush
Avoid saying what you mean, usually because it is uncomfortable
Better late than never
Better to arrive late than not to come at all
Bite the bullet
To get something over with because it is inevitable
Break a leg
Good luck
Call it a day
Stop working on something