Definition of "sapphire" in English

noun

1. (countable) A clear deep blue variety of corundum, valued as a precious stone.

2. (countable and uncountable) A white, yellow, or purple variety of corundum, either clear or translucent.

3. (countable and uncountable) A deep blue colour.

4. (heraldry) Azure, when blazoning by precious stones.

5. (countable) Any hummingbird in the genera Hylocharis and Chlorestes, as well as the rufous-throated sapphire, which is now in the genus Amazilia.

6. Any of the butterflies in the southern Asian lycaenid genus Heliophorus or the African lycaenid genus Iolaus.

adjective

1. of a deep blue colour.

2. pertaining to a 45th year