Heb. 'eglah, (Deuteronomy 21:4,6; Jeremiah 46:20). Untrained to the yoke (Hosea 10:11); giving milk (Isaiah 7:21); ploughing (Judges 14:18); treading out grain (Jeremiah 50:11); unsubdued to the yoke an emblem of Judah (Isaiah 15:5; Jeremiah 48:34).
Heb. parah (Genesis 41:2; Numbers 19:2). Bearing the yoke (Hosea 4:16); "heifers of Bashan" (Amos 4:1), metaphorical for the voluptuous females of Samaria. The ordinance of sacrifice of the "red heifer" described in Numbers 19:1-10; Compare Hebrews 9:13.
These dictionary topics are from M.G. Easton M.A., D.D., Illustrated Bible Dictionary, Third Edition, published by Thomas Nelson, 1897. Public Domain, copy freely.
Easton, Matthew George. "Entry for 'Heifer'". "Easton's Bible Dictionary".