The Collaborative International Dictionary of English v.0.48:
Palisade \Pal`i*sade"\, n. [F. palissade, cf. Sp. palizada, It.
palizzata, palizzo, LL. palissata; all fr. L. palus a stake,
pale. See Pale a stake.]
1. (Fort.) A strong, long stake, one end of which is set
firmly in the ground, and the other is sharpened; also, a
fence formed of such stakes set in the ground as a means
2. Any fence made of pales or sharp stakes.
3. A line of bold cliffs, esp. one showing basaltic columns;
-- usually in pl., and orig. used as the name of the
cliffs on the west bank of the lower Hudson.
[Webster 1913 Suppl.]
Palisade cells (Bot.), vertically elongated parenchyma
cells, such as are seen beneath the epidermis of the upper
surface of many leaves.
Palisade worm (Zool.), a nematoid worm (Strongylus
armatus), parasitic in the blood vessels of the horse, in
which it produces aneurisms, often fatal.