Outer cover
Sheath and outer cover are semantically related. In some cases you can use "Sheath" instead a noun phrase "Outer cover".
Sheath
Sheath noun - Something that encloses another thing especially to protect it.
Show all Definitions
Synonyms for Sheath
Cite this Source
Sheath and Outer cover. (2016). Retrieved 2026, July 22, from https://thesaurus.plus/related/outer_cover/sheath
Outer cover & Sheath. N.p., 2016. Web. 22 Jul. 2026. <https://thesaurus.plus/related/outer_cover/sheath>.
Sheath or Outer cover. 2016. Accessed July 22, 2026. https://thesaurus.plus/related/outer_cover/sheath.
Google Ngram Viewer shows how "outer cover" and "sheath" have occurred on timeline