Dated, colloquial, and mildly derogatory term for one's own husband. Often used by wives in a self-deprecating or jocular way. Derived from 宿のろくでなし (yado no rokudenashi, 'good-for-nothing of the house').
My good-for-nothing husband is lazing around again today.
Contraction of 宿のろくでなし (yado no rokudenashi), literally 'good-for-nothing of the house'. The exact historical derivation is uncertain, but the term is conventionally associated with this phrase.