sheath Pronunciation: /ʃiːθ/Translate sheath | into Italian | into Spanish German translation of sheathn. (pl. sheaths /ʃiːðz; ʃɪːθs/) 1 (for knife, sword, etc.) Scheide 2 (condom) Gummischutzsheath in other Oxford dictionaries Definition of sheath in the British & World English dictionary Definition of sheath in the US English dictionary