A married person, husband or wife.
- Etymological and pronouncing dictionary of the English language. By Stormonth, James, Phelp, P. H. Published 1874. (noun) (n.) (noun)
A husband or wife.
- The american dictionary of the english language. By Daniel Lyons. Published 1899. (noun) (n.) (noun)
A married person, husband, or wife. See Sponsor.
- Nuttall's Standard dictionary of the English language. By Nuttall, P.Austin. Published 1914. (noun) (n.) (noun)
Either one of a married couple considered in relation to the other.
- The Winston Simplified Dictionary. By William Dodge Lewis, Edgar Arthur Singer. Published 1919. (noun) (n.) (noun)

Usage examples:

" Likewise the prospective spouse she added.
- The Prince of Graustark by George Barr McCutcheon
" I give her to him with all my heart," said Robin Hood, " and he that dare to oppose, or take her away from her spouse shall buy her dearly."
- by
It is the hyghest dignitie that longethe to the wyfe to obsequyous vnto her spouse
- A Merry Dialogue Declaringe the Properties of Shrowde Shrews and Honest Wives by Desiderius Erasmus