Answer: jambeau

AnswerCrossword Clue
jambeauspikefish, Parahollardia lineata, found in the deep waters of the Atlantic Ocean
jambeau(obsolete) armour for the legs below the knees, a greave also JAMB, JAMBART, JAMBE, JAMBER, JAMBIER
jambeaupiece of plate armor for the leg between the knee and the ankle, usually composed of front and back pieces