The Collaborative International Dictionary of English v.0.48:

Damosel \Dam"o*sel\ (d[a^]m"[-o]*z[e^]l), Damosella
\Dam`o*sel"la\ (-z[e^]l"l[.a]), Damoiselle \Da`moi`selle"\
   (d[.a]`mw[aum]`z[e^]l"), n.
   See Damsel. [Archaic]
   [1913 Webster]

WordNet (r) 3.0 (2006):

damosel
    n 1: a young unmarried woman [syn: damsel, demoiselle,
         damoiselle, damosel, damozel]