. . . . . . . . . "back"@en-us . "0"^^ . "a support that you can lean against while sitting; \"the back of the dental chair was adjustable\""@en-us . . . . . . . "0"^^ . . "back"^^ . . . "102671514"@en-us . . . . "02767433-n"^^ . . . . . . . . . . "102767433"^^ . . . "a support that you can lean against while sitting; \"the back of the dental chair was adjustable\""@en-us . . . "backrest"@en-us .