أَبْقَعُ
1.
, applied to a غُرَاب [or bird of the crowkind], In which is blackness and whiteness; (S, TA;) and so applied to a dog: (Lh, TA voce أَبْرَقُ, q. v.:) or, applied to the former, having whiteness in the breast; and this is the worst [or most ill-omened] of the crow-kind: (TA:) [it is this species, according to some, which is called غُرَابُ
البَيْنِ: (see article بين:)] or, applied to a غراب &c., party-coloured, or pied: (Msb:) or the whitewinged
غراب: (ISh, TA in article حذف:) plural, when thus applied, بُقْعَانٌ, (TA,) or بِقْعَانٌ, with kesr; the quality of a subst. being predominant in it; but when it is regarded as an epithet, [in which case the feminine is بَقْعَاءُ,] its plural is بُقْعٌ. (Msb.)
2.
Hence, as being likened to such a bird, (tropical:) Anything bad, evil, wicked, mischievous, [ill-omened,] or the like. (TA.)
4.