guaina significa in inglese

boot [boots]▼(construction: flexible cover to protect a shaft, lever, switch etc.)
noun
[UK: buːt] [US: ˈbuːt]

Bowden cable▼(cable used to transmit force by the movement of an inner cable)
noun

scabbard [scabbards]▼(the sheath of a sword)
noun
[UK: ˈskæ.bəd] [US: ˈskæ.bərd]

sheath [sheaths]▼(long case)
noun
[UK: ʃiːθ] [US: ˈʃiːθ]

vagina [vaginae]▼(botanical sense)
noun
[UK: və.ˈdʒaɪ.nə] [US: və.ˈdʒaɪ.nə]

sheathe [sheathed, sheathing, sheathes]▼(to put (something) into a sheath)
verb
[UK: ʃiːð] [US: ˈʃiːð]