Also in Barona, "puts on shoes or socks"
Refers to the action of sticking one's feet into something, such as into pants or shoes while putting them on.
Note similar verb kuu-up (kechuu-uup) "slips onto the leg, fits it on the feet, wears on leg or foot". In some dialects, this is the preferred verb for "slips on shoes".
kuu- often signifies action done with the feet.