Spelled esally tehwiill in Mesa Grande dictionary
Literally, "it fits the hand/arm". Can refer to anything that goes around the arm or hand, such as an armband.
esally: "his hand/arm"
tehwiill: from verb tuuhwill (tetehwiill), "attaches, connects, fits, buttons"
Compare to Tiipay shally tekhap "bracelet". Tiipay tekhap means "inserts, connects, buttons"; effectively equivalent to 'Iipay tuuhwill.