Someone who did not finish school, high school and college primarily.
Tim is having a hard time getting a better job as he was a high-school dropout.
Jack never got his B.A. as he became a college dropout.
Some students drop out of secondary school early in order to get jobs. However, such dropouts often regret their decision later in life.
fall by the wayside
drop by the wayside
To give up or fail before the finish.
The boys tried to make a 50-mile hike, but most of them fell by the wayside.
George, Harry, and John entered college to become teachers, but Harry and John fell by the wayside, and only George graduated.
hear a pin drop
It's so quiet in the room you could hear a pin drop.
jaw drop a mile
Mouth fall wide open with surprise. Used with a possessive.
Tom's jaw dropped a mile when he won the prize.
To cease to talk about; set aside; forget.
This is such an unpleasant subject that I suggest we let it drop for a few days.
To disclose; hint.
He unexpectedly let drop that he was resigning and joining another firm.
A person who is always mentioning well-known names.
Since her move to Hollywood she has become a regular namedropper.
shop till you drop
Ходить по магазинам очень долго, до тех пор пока совсем не выбьешься из сил.
If you go to London with Julie you'll shop till you drop, so take comfortable shoes!
Если ты поедешь в Лондон с Джули, вы будете ходить по магазинам до переутомления, так что не забудь удобные туфли!
so quiet you can hear a pin drop
Очень тихо; слышно, как муха пролетит.
Suddenly became so quiet you could hear a pin drop.
Внезапно стало очень тихо.