GRE TOEFL sheath Definition A protective case or covering for a blade or tool. Example "He slid the knife back into its leather sheath." Sign in to save GRE PDF — $25 TOEFL PDF — $25 ← shear shed → Study tips featuring "sheath" TOEFL Academic Vocabulary: Study by Topic Related words GRE awe GRE smithereens GRE abacus SAT abase GRE abash GRE abate GRE abbreviate GRE abbreviation SAT abdicate SAT abdomen GRE abduct GRE aberrant