Latin umbra meant shade or shadow. Its diminutive umbella lies behind Italian ombrella and English umbrella.
Source
Merriam-Webster: umbrellaWord History supplies the route; Kids Etymology gives shade, shadow and little shade.
A portable folding cover used against rain or sun.
A little shade carried into English
Latin
umbra
‘shade, shadow’
within Latin
Latin
umbella
‘sunshade, parasol’
into Late Latin
Late Latin
umbrella
into Italian
Italian
ombrella
into English
English
umbrella
Latin umbra meant shade or shadow. Its diminutive umbella lies behind Italian ombrella and English umbrella.
Word History supplies the route; Kids Etymology gives shade, shadow and little shade.
The name recalls shade even when the object is being used in rain.