save; spare; omitWith time, effort, labor, or trouble, it means to save or spare them. With features, steps, or other elements, it means to omit or eliminate them. The exact form を省く is the dictionary form and is typically preceded by a noun marked with を.
JA: これは主婦の手間を省く便利な器具です。
EN: This is a useful device that saves homemakers time and effort.