say it: bak
back is a verb, noun, adverb and adjective meaning "be behind; approve of". It carries 28 recorded senses.
strengthen by providing with a back or backing
(football) a person who plays in the backfield
football
the series of vertebrae forming the axis of the skeleton and protecting the spinal cord
“the fall broke his back”
the protective covering on the front, back, and spine of a book
“the book had a leather binding”
the part of a garment that covers the back of your body
“they pinned a `kick me' sign on his back”
(American football) the position of a player on a football team who is stationed behind the line of scrimmage
American football
in or to or toward a former location
“she went back to her parents' house”
in or to or toward an original condition
“he went back to sleep”
in reply
“he wrote back three days later”
in repayment or retaliation
“we paid back everything we had borrowed”
“he hit me and I hit him back”
“I was kept in after school for talking back to the teacher”
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for back come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.