Crossword puzzle clue "smooth engine sound"

Here are the possible solutions for smooth engine sound clue

Answer
Clue
Relevancy
hum
Clue
Smooth engine sound
Smooth machinery sound
Definition
to make a sound like bees
purr
Clue
Smooth engine sound
Smooth-running engine sound
Sound engine sound
Definition
to utter a low, vibrant sound, also PUR
sade
Clue
"Smooth Operator" smooth operator
flywheel
Clue
Regulator used to smooth the running of a reciprocating engine
Definition
a heavy disk used in machinery
purrs
Clue
Smooth engine sounds
Definition
PURR, to utter a low, vibrant sound, also PUR

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