Other forms: umbrellas
You open an umbrella over your head when it rains. Put up the umbrella, a broken umbrella, under one umbrella.
It turns inside out in a gust because the canopy is a shallow dome and the wind gets underneath, which is why vented ones survive better. Figuratively, an umbrella term or an umbrella body covers several things at once. Note that the Italian and Latin behind it mean a little shade — it was a sunshade first.
1nounumbrellaA folding canopy held over the head against rain.
“It started to rain, so she opened her umbrella and walked on.”
2nouncoveringSomething covering several things at once.
“The charity works under the umbrella of a larger international organisation.”
umbrella is a canopy.
Italian ombrella comes from Latin umbella, a little sunshade, from umbra, shade. Umbrage and sombre come from the same shade.
Latin
umbella
LL.
umbrella
Italian
ombrella — parasol, sunshade
English, today
umbrella
Built from
Italian ombrella (“parasol, sunshade”), from LL. umbrella (influenced by umbra (“shadow, shade”)), from Latin umbella, from umbra + -la.
Etymology from Wiktionary, CC BY-SA