While single or unmarried. This phrase is applied to single women, to denote that something has been done, or may be done, while the woman is or was unmarried. Example, when a judgment is rendered against a woman dum sola, and afterwards she marries, the scire facias to revive, the judgment must be against both husband and wife.
DUM SOLA
TheLaw.com Law Dictionary & Black's Law Dictionary 2nd Ed.