sprung

sprung
/sprʌŋ; sprʌŋ/ pp
of spring3.
sprung / sprʌŋ; sprʌŋ/ adj fitted with springs (spring1 3)装有弹簧的
    a sprung floor, mattress, seat 弹簧地板、 床垫、 坐具.

牛津英汉双解词典