Noah Webster
Hersillon
HERS'ILLON, noun [from herse.] In the military art, a plank or beam, whose sides are set with spikes or nails, to incommode and retard the march of an enemy.
HERS'ILLON, noun [from herse.] In the military art, a plank or beam, whose sides are set with spikes or nails, to incommode and retard the march of an enemy.