Definition of innerspring in English:
 innerspring
adjectiveˈɪnəsprɪŋˈɪnərˌsprɪŋ
US (of a mattress) with internal springs; interior-sprung.
 Example sentencesExamples
-  Both inner spring mattresses and foam mattresses have their positive qualities.
 -  With most inner-spring mattresses, the same gauge spring is used throughout the mattress.
 
  Definition of innerspring in US English:
 innerspring
adjectiveˈɪnərˌsprɪŋˈinərˌspriNG
US (of a mattress) with internal springs.
 Example sentencesExamples
-  With most inner-spring mattresses, the same gauge spring is used throughout the mattress.
 -  Both inner spring mattresses and foam mattresses have their positive qualities.