whump

• And when I heard the heavy whump-whump-whump of the helicopter overhead, hidden above the gray clouds, I did a quick circular sweep of the sky and tried to pull out the rocket launcher.
• When the furnace suddenly kicked on with a whump, I jumped so much, I almost fell out of bed A little later, raccoons or possums or some other beasts I had never heard before began to yowl and hiss in the yard. —  AHMM,July-August2006
• She felt rather than heard a sound like whump-whump-whump through her body. —  Dozois, Gardner ; Strahan, Jonathan - SSC - The New Space Opera (v1.0)
• Through Shibo's comm line he could hear the distant whurnp-whump-whump of magnetic detectors in the control vault.
• His muscles tightened and his breath caught, then gusted out at the ba-whump of metal on metal. —  Ledbetter, Suzann - North of Clever

Used in the Same Context