back · n
back (SEAT)
C2 the part of a seat that you lean against when you are sitting
Dictionary examples:
the back of a chair (6.7)
behind sb's back
C2 If you do something behind someone's back, you do it without them knowing, often in an unfair way.
Dictionary examples:
Have they been saying things about me behind my back? (16.0)
turn your back on sb/sth
C2 to decide to stop having contact with someone or something, or to refuse to help someone
Dictionary examples:
She turned her back on Hollywood and went to live in Florida. (18.1)
the back
A2 the part of something that is farthest from the front or on the side opposite the front
Dictionary examples:
The back of the class is where all the fun happens! (0.0)
The back of the bus is perfect for secret candy eating! (0.0)
The back of my t-shirt says 'Exit here'. People laugh a lot! (0.0)
He wrote her e-mail address down on the back of an envelope. (16.9)
Our seats were right at the back of the theater. (26.5)
back (BODY)
A2 the part of your body from your shoulders to your bottom
Dictionary examples:
I put a 'Do Not Disturb' sign on my back during exams. (0.0)
My cat loves to scratch my back, but I'm not a tree! (0.0)
I painted a smiley face on my back for my followers. (0.0)
I've got a bad back. (8.7)
back injuries/pain (40.1)
He lay on his back, staring at the ceiling. (45.9)
in back of sb/sth
B1 behind someone or something
Dictionary examples:
The shy student always sat in back of the classroom, hoping to avoid attention. (0.0)
The chef hid the burnt cake in back of the fridge, hoping no one would find it. (0.0)
The mischievous kid hid in back of the teacher, making funny faces at classmates. (0.0)
They sat in back of us on the plane. (14.0)