Définition "sheath" dans le dictionnaire Collins English Dictionary & Thesaurus

sheath n pl , sheaths

1 a case or covering for the blade of a knife, sword, etc.

2 any similar close-fitting case

3 (Biology) an enclosing or protective structure, such as a leaf base encasing the stem of a plant

4 the protective covering on an electric cable

5 a figure-hugging dress with a narrow tapering skirt

6 another name for → condom vb

7 another word for → sheathe (Old English sceath; related to Old Norse skeithir, Old High German sceida a dividing; compare Old English scadan to divide)

leaf sheath n
(Botany) a sheath covering the base of a grass stem

medullary sheath n

1 (Anatomy) a myelin layer surrounding and insulating certain nerve fibres

2 a layer of thick-walled cells surrounding the pith of the stems of some higher plants

sheath knife n
a knife carried in or protected by a sheath