رَبِيبٌ
1.
Reared, fostered, brought up, fed, or nourished; [and taken good care of, until the age of puberty; (see 1;)] as also
مَرْبُوبٌ; (S, M, K;) both applied to a boy: (S, M:) and in like manner applied to a horse: (M:) or the latter epithet, applied to a horse, (tropical:) tended well, or taken good care of: (A:) the former is also applied to a gazelle; (IAar, K in article دخل;) [as meaning (assumed tropical:) brought up in, or near, the house or tent, and there fed;] like أَهْلِىٌّ: (TA in that article:) and [its feminine] رَبِيبَةٌ is applied to a ewe or she-goat, (شَاةٌ, K,) meaning (assumed tropical:) brought up in the tent, or house, for the sake of her milk; (S, K; [see also رُبَّى;]) plural رَبَايءِبُ; (S;) this last being applied to sheep or goats that are tied near to the tents, or houses, and there fed, and that do not go forth to pasture; (M, TA;) of which it is said that none are to be taken for the poor-rate. (TA.)
2.
[Hence, A step-son,] a man's wife's son (T, S, M, A, Msb, K) by another husband; (T, S, M, A, K;) as also
رَبُوبٌ: (T, K:) plural أَرِبَّاءُ. (Msb.) And رَبِيبَةٌ [A step-daughter;] a woman's husband's daughter by another wife: (S:) or a man's wife's daughter (T, M, A, Mgh, Msb, K) by another husband; (T, M, A;) because he rears her: (Mgh:) plural رَبَايءِبُ (A, Mgh, Msb) and sometimes رَبِيبَاتٌ. (Msb.)
3.
Also, and
رَابٌّ, (T, M, K,) both synonym, like شَهِيدٌ and شَاهِدٌ, and خَبِيرٌ and خَابِرٌ, (TA,) or the latter, (T, S,) mentioned by IAar, is the correct term, (T,) [A step-father;] the husband of a mother (T, S, M, K) who has a child by another husband. (T.) And رَبِيبَةٌ and
رَابَّةٌ, (T,) or the latter [only], (S, K,) [A stepmother;] the wife of a father (T, S, K) who has a child by another wife. (T.) رَبِيبَةٌ also signifies [A foster-mother;] a woman who has the charge of a child, who carries him, and takes care of him, and rears, or fosters, him; (Th, S, M, Msb, K;) like
رَابَّةٌ; the former being of the measure فَعِلَيةٌ in the sense of فَاعِلَةٌ. (Msb.) أَربَّاءُ النَّبِىّ [meaning The foster-fathers of the Prophet] is an appellation given to the people [of the tribe of Saad] among whom Mohammad was suckled; as though اربّاء were plural of رَبِيبٌ [as it is said to be in one of the senses mentioned above]. (TA.)
4.