eth (?th)n. Variant of edh.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.eth (?ð; ??) n (Letters of the Alphabet (Foreign)) a variant of edhETH abbreviation for Ethiopia (international car registration) Collins English Dictionary ? Complete and Unabridged, 12th Edition 2014 © HarperCollins Publishers 1991, 1994, 1998, 2000, 2003, 2006, 2007, 2009, 2011, 2014eth or edh (?ð) n. a letter in the form of a crossed d, written ? or ð, used in Old English writing to represent both voiced and unvoiced th and in modern Icelandic and in phonetic alphabets to represent voiced th. -eth1 , an ending of the third person singular present indicative of verbs, now occurring only in archaic forms or used in solemn or poetic language: hopeth; sitteth. [Old English -eth, -ath, -oth, -th; akin to Latin -t] -eth2 , var. of -th 2, the ordinal suffix, used when the cardinal number ends in -y: twentieth; thirtieth. Eth. Ethiopia. Random House Kernerman Webster’s College Dictionary, © 2010 K Dictionaries Ltd. Copyright 2005, 1997, 1991 by Random House, Inc. All rights reserved.