the first of four consecutive plays during which an offensive team must advance the ball at least ten yards to retain possession of it.
a gain of ten or more yards by an offensive team that entitles it to continued possession for a new series of downs.
Words nearby first down
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for first down
In Week 2, New York Jets wideout Santonio Holmes bobbled and dropped what would have been a first-down pass.The NFL Replacement Referees’ 6 Worst Blown Calls (VIDEO)|Jake Heller|September 26, 2012|DAILY BEAST