Relating to, consisting of, or extending to three fourths of the usual full length: a skirt of three-quarter length.
Depicting the subject turned slightly from a full frontal view: a three-quarter portrait.
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.