thud

noun3

1. •
   a deep, short noise from something heavy landing on the floor

   • These were but the thoughts of a second, but the voices were nearer, and I heard a dull thud far up the passage, and knew that a man had jumped down from the churchyard into the hole. — 1898
2. •
   A hard, dull impact.

   • Sinclair told the B.A.R. [Bay Area Reporter] he felt the thud of the pistol on his left cheek about a 100 feet from his car, […] — 1995
3. •
   A slower, dull impact with a wide surface area.

   • It still wasn’t what I’d call painful but as he swung his arm and the strands of the flogger hit me together it felt like a solid thud rather than a number of different tails stinging me. — 2013

verb1

1. •
   To make the sound of a dull impact.

   • At the same instant two arrows thudded into the carcass of the deer over which he knelt, passing but a few inches from his head. — 1849

noun1

1. •
   (slang, old-fashioned) Republic F-105 Thunderchief jet ground attack fighter.

   • The aircraft with the most threatening mission and highest loss rate was the F-105 Thunderchief. Of 833 "Thuds" built, 382 were lost between 1965-1972. — 2002