thud drill

A format of American football practice in which the players, wearing helmets and shoulder pads, hit each other, but remain on their feet
Segen's Medical Dictionary. © 2012 Farlex, Inc. All rights reserved.

thud drill

Thump practice Sports medicine A format of football practice in which the players, garbed in helmet and shoulder pads, hit each other, but remain on their feet. See Spring practice.
McGraw-Hill Concise Dictionary of Modern Medicine. © 2002 by The McGraw-Hill Companies, Inc.