innerspring

[ in-er-spring ]
/ ˈɪn ərˌsprɪŋ /

adjective

having or characterized by a large number of enclosed coil springs within an overall padding: innerspring construction.

RELATED WORDS

Origin of innerspring

First recorded in 1925–30; inner + spring
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019