An acid-base indicator which is colorless in acid solution, but turns pink to red as the solution becomes alkaline. It is used medicinally as a cathartic.
Bird's-eye
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Seen from above, as if by a flying bird; embraced at a
glance; hence, general; not minute, or entering into details; as, a
birds-eye view.
Bird's-eye meaning & definition 1 of Bird's-eye.
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