凭せかける[motasekakeru] to lean against
凭れる[motareru] to lean against
凭れ椅子[motareisu] reclining chair
凭れ掛る[motarekakaru] to lean on

凭り掛かる[yorikakaru] to lean against
凭る[yoru] to lean on
背凭れ[semotare] back (of a chair)

鯔背[inase] gallant
違背[ihai] violation
棄背[kihai] giving up and turning back
向背[kouhai] one's attitude
上背[uwazei] stature

側背[sokuhai] flank
団栗の背比べ[dongurinoseikurabe] having no outstanding characteristics
中肉中背[chuunikuchuuzei] medium build
中背[chuuzei] average height
二律背反[niritsuhaihan] antinomy