thud

definition: a heavy dull sound (as made by impact of heavy objects)
example:
speech part: noun
synonyms: thump
definition: strike with a dull sound
example: Bullets were thudding against the wall
speech part: verb
synonyms:
definition: make a dull sound
example: the knocker thudded against the front door
speech part: verb
synonyms: thump
definition: make a noise typical of an engine lacking lubricants
example:
speech part: verb
synonyms: scrunch

thud is explained and pronounced

How thud is being used?