- Informal. deltoid muscles.
Origin of delts
First recorded in 1965–70; by shortening
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018
Examples from the Web for delt
For a few minutes the flames stood up, snapping far into the air, and throwing detached ribbons of fire toward the Delt buildings.The Bail Jumper
Robert J. C. Stead
Word Origin and History for delt
short for deltoid (q.v.).
Online Etymology Dictionary, © 2010 Douglas Harper