جَدْىٌ

A kid: (S:) or a male kid; (IAmb, Msb, K;) the female being called عَنَاقٌ: (IAmb, Msb:) or a kid in his first year; (Mgh, Msb;) not yet a year old: (TA:) one should not say جِدْىٌ; (S;) this being a bad dialect var.: (Msb:) plural (of pauc., TA, applied to three, S) أَجْدٍ (S, Msb, K) and (of mult., TA, applied to more than three, S) جِدَاءٌ (S, Mgh, Msb, K) and جِدْيَانٌ: (K:) جَدَايَا [as plural of جَدْى] is not allowable. (S.)

Hence, as being likened thereto, (M, TA,) الجَدْىُ (assumed tropical:) A certain star, (S, Msb, K,) [the star a of Ursa Minor, commonly called the pole-star,] that revolves with بَنَاتُ نَعْشٍ, (K,) by the side of the [north] pole, by which the kibleh is known, (S,) or according to which the kibleh is turned; (Msb;) the bright star at the extremity of the tail of the Lesser Bear; (Kzw;) the star of the kibleh; (Mgh;) also called جَدْىُ الفَرْقَدِ; (Mgh, Msb;) and called by the astronomers الجُدَىُّ, in the diminutive form, to distinguish it from what next follows. (Mgh, MF.) [See also القُطْبُ.]

Hence also, (M, TA,) A certain sign of the Zodiac; (S, K;) [namely, Capricornus;] the tenth of the signs of the Zodiac; (Mgh;) that next to the دَلْو; unknown to the Arabs [of the classical times]. (K.) This and the former together are called [the] جَدْيَانِ. (TA.)

جَدْيَانِ is also an anomalous dual of جَدْوَى, q. v. (Lh, M, K.)