adjective.
Overlapping at the base to form a flat, fanlike arrangement in two ranks, as the leaves of some irises.
The Century Dictionary and Cyclopedia
Riding on horseback; mounted upon a horse.
Straddling.
In entomology, applied to the antennæ or other jointed organs when they are compressed, and each joint appears to be longitudinally folded, inclosing the base of the succeeding one.
the GNU version of the Collaborative International Dictionary of English
adjective.
Mounted on, or sitting upon, a horse; riding on horseback.
adjective.
Overlapping each other; -- said of leaves whose bases are folded so as to overlap and bestride the leaves within or above them, as in the iris.