Definify.com
Webster 1913 Edition
Ladies' tresses
{
La′dy’s tra′ces
(lā′dĭz trā′sĕz)
, La′dies’ tress′es
(lā′dĭz trĕs′sĕz)
. } Noun.
(Bot.)
A name given to several species of the orchidaceous genus
Spiranthes
, in which the white flowers are set in spirals about a slender axis and remotely resemble braided hair.