Background
sheath
The Oxford Pocket Thesaurus of Current English
sheath • noun 1. a sheath for a sword synonyms : scabbard, case, casing, cover, covering, envelope, wrapper.
2. a contraceptive sheath synonyms : condom, contraceptive; inf. rubber.
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rubber
The Oxford Pocket Dictionary of Current English
rub·ber 1 / ˈrəbər / • n. a tough elastic polymeric substance made from the latex of a tropical plant or synthetically. ∎ ( rubbers ) rubber boots; galoshes. ∎ Baseball an oblong piece of rubber or similar material ...
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condom
The Oxford Pocket Thesaurus of Current English
condom • noun synonyms : contraceptive, prophylactic, sheath; inf. rubber.
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