resh (r?sh)n. The 20th letter of the Hebrew alphabet. See Table at alphabet.[Hebrew rê?, of Aramaic or Phoenician dialectal origin; see r?? in Semitic roots.]American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.resh (re??; Hebrew re?) n (Letters of the Alphabet (Foreign)) the 20th letter in the Hebrew alphabet (?), transliterated as r[from Hebrew, from r?sh head]Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014resh (re??) n. the 20th letter of the Hebrew alphabet. [1895?1900;