HERISSON
n.In fortification, a beam or bar armed with iron spikes pointing outwards, and a turning on a pivot; used to block up a passage.
Her "is *son, n. Etym: [F. hérisson, prop. , hedgehog. ] (fort. )
hérisson
hérisson n. m. nom masculin Petit mammifère dont le corps est couvert de piquants.