back4 S2 W3 [only before noun]
at or in the back of something [≠ front]: ➔ back door
You'll be sleeping in the back bedroom.
Turn to the back page.
I keep my keys in my back pocket.
There was the sound of giggling from the back row.
The rabbit had one of its back legs caught in a trap.
behind something, especially a building [≠ front]:
the back garden
We left by the back gate.
from the back:
The back view of the hotel was even less appealing than the front.
a street etc that is away from the main streets:
a short cut down a back lane
money that someone owes from an earlier date
a copy of a magazine or newspaper from an earlier date
a back vowel sound is made by lifting your tongue at the back of your mouth