Feminine of tsen; a hook (as pointed); also a (large) shield (as if guarding by prickliness); also cold (as piercing) -- buckler, cold, hook, shield, target.
KJV: And the staff of his spear was like a weaver's beam; and his spear's head weighed six hundred shekels of iron: and one bearing a shield went before him.
NASB: The shaft of his spear was like a weaver's beam, and the head of his spear weighed six hundred shekels of iron; his shield-carrier also walked before him.