1 a (1)
: the rear part of the human body especially from the neck to the end of the spine
: the body considered as the wearer of clothes
- They were left with nothing but the clothes on their backs.
: capacity for labor, effort, or endurance
: the back considered as the seat of one's awareness of duty or failings
: the back considered as an area of vulnerability
- the police officer's partner always watches his back
: the part of a lower animal (such as a quadruped) corresponding to the human back
- riding on the back of an elephant
: spine 1c
- The title is on the book's back.
: the side or surface opposite the front or face
: the rear part ;
: the farther or reverse side
- I only saw him from the back.
- wrote the number on the back of an envelope
: something at or on the back for support
: a place away from the front
: a position in some games (such as football or soccer) behind the front line of players;
: a player in this position
: a swimming race in which swimmers use the backstroke
- She placed first in the 100-meter back.
back of one's hand
back of the hand
back of one's mind
: the part of one's mind where thoughts and memories are stored to be drawn on
behind one's back
: without one's knowledge
- talking about me behind my back
in back of
- One day, I was sitting in the tiny parlor in back of the store …
- —John McNulty