حَلِيلٌ

Also A fellow-lodger, or fellow-resident, of another, in one house: feminine with ة. (S.)

And hence, (TA,) A husband: (S, Msb, K:) and with ة a wife; (S, Mgh, Msb, K;) as also without ة: (K:) or they are so called because each occupies a place, in relation to the other, which none beside occupies: (Msb:) [but there may be two or more wives to one man:] according to some, they are so called because the husband is lawful to the wife, and the wife to the husband: but the word, [or rather each word,] thus applied, is ancient: not a law-term: the plural is حَلَايءِلُ. (TA.)

Also A neighbour: (Msb:) feminine with ة. (S.)

And A guest. (Msb.)