1570s, from French équipage (15c.), from équiper "to fit out" (see equip). Now largely replaced by equipment. In 18c. often especially tweezers, a toothpick, earpick, nail-cleaner, etc., carried on the person in a small case.
equilateral
equilibrium
equine
equinox
equip
equipage
equiparation
equipment
equipoise
equitable
equity