burr
Word family adjectiveburrynounburdockburweedburr
burr /bɜː $ bɜːr/ noun [countableC] 2. SPEAK A LANGUAGE British EnglishBrE a way of pronouncing English with a strong ‘r’ sound 颤动小舌的r音,粗喉音 3 SOUNDa fairly quiet regular sound like something turning quickly 呼呼声 SYN whirr the burr of a motor 马达的呼呼声
Origin burr 1. (1600-1700) Probably from a Scandinavian language
2. (1700-1800) Probably from the sound.