Astron. A star, or pair of stars, marking one of the forepaws of the old constellation Leo. [For opinions as to identification, see F. N. Robinson's ed. of Chaucer, p.824.]
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Astron. An imaginary point in the celestial sphere diametrically opposite to some other point, esp. to the zenith of the sun; also, a representation of such a point on an astrolabe.
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Astron. (a) The point in the sky directly overhead, the zenith; also, the part of an astrolabe representing the zenith; (b) the azimuth reading or bearing of a heavenly body.
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