engine knock
Word Rarity
Uncommon
Frequency: Zipf frequency 4.23 in modern English
22
Scrabble Score
11
Letters
3
Syllables
7
Unique Chars
Meaning
noun
a rattling, pinging, or tapping sound caused by improper combustion, where the air-fuel mixture ignites spontaneously in the cylinders before the spark plug fires, or in multiple spots simultaneously
Uncountable