Hollow
Hollow noun - A sunken area forming a separate space.
Cite this Source
Seam and Hollow. (2016). Retrieved 2026, August 13, from https://thesaurus.plus/related/hollow/seam
Hollow & Seam. N.p., 2016. Web. 13 Aug. 2026. <https://thesaurus.plus/related/hollow/seam>.
Seam or Hollow. 2016. Accessed August 13, 2026. https://thesaurus.plus/related/hollow/seam.
Google Ngram Viewer shows how "hollow" and "seam" have occurred on timeline