Englishfor English speakers
frost
Noun
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Frost is a cover of thin ice on things. Some of these are tree branches, plants, leaves, wires, poles, cars, rooftops, or windows. Frost is like dew, only frozen. Frost can be light or heavy.
The car windows were heavy with frost.
frost
Verb
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To get covered with frost.
The refrigerator frosted the glasses.
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To cover a cake with icing/frosting to looking like frost.
Lilly frosted the birthday cake.
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To anger or annoy.
I think the boss's decision frosted him a bit.
index
Noun
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An index is an alphabetical (A to Z) list, usually at the back of a book, where you can find the pages in a book that talk about particular things or words.
Look in the index to see where they talk about Chomsky.
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An index shows the level of prices, wages, etc. so you can compare them with those of an earlier date.
On Wall Street, the Dow Jones index closed 10 points up at 2,731.23.
index
Verb
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If you index something, you make an index (guide) for it.
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If you index something to a certain price level, you make it go up or down with that level.