Of a garment, the fringe of a garment. The Jews attached much importance to these, because of the regulations in Numbers 15:38,39. These borders or fringes were in process of time enlarged so as to attract special notice (Matthew 23:5). The hem of Christ's garment touched (9:20; 14:36; Luke 8:44).
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 'Hem'". "Easton's Bible Dictionary".