Ankle
Wilson's Dictionary of Bible Types [1]
Ezekiel 47:3 (b) The river in this passage is a type of the Holy Spirit, and the ankles represent the walk of the child of GOD. As the Holy Spirit enters the life of the believer his walk is changed. No longer does he travel in the ways of the world, but rather he is led to the house of GOD, and led to walk among the people of GOD. This is one of the first proofs that a man has contacted the Lord Jesus in faith, been cleansed by the blood of the Lamb, and has become influenced by the Holy Spirit who is the Living Water.
King James Dictionary [2]
ANK'LE, n. ank'l. The joint which connects the foot with the leg.
Webster's Dictionary [3]
(n.) The joint which connects the foot with the leg; the tarsus.
International Standard Bible Encyclopedia [4]
an´k ' l (in older editions of the King James Version, ancle ): From Hebrew מי אפסים , mē'āpheṣayim literally, "water of ankles," i.e. shallow water ( Ezekiel 47:3 ); "anklebones" ( Acts 3:7 ) from σφυδρόν , sphudrón "ankle chains" (the King James Version "chains"), from a Hebrew root meaning "to walk about proudly" ( Numbers 31:50 ). The same Hebrew word is translated "bracelet" ( 2 Samuel 1:10 ), but in Isaiah 3:20 another word from the same root "ankle chains" (the King James Version "ornaments of the legs"). Compare Anklet ( Isaiah 3:18 ).