IshLevit 83:9 :ܟܘܣܬܢܐ܃ ܕܐܝܬ ܠܗ ܒܣܪܐ ܝܬܝܪܐ ܒܝܬ ܟܬܦ̈ܬܗ܂ ܐܘ ܬܚܝܬ ܨܘܪܗ܂ ܐܘ ܓܗܝܢ ܡܢ ܟܪܣ ܐܡܗ‏ : a hunch back is one who has excess flesh between his shoulders, or beneath his neck, or was bent over from his mother's womb
See the entire entry for kustān adj. hunch back