English

Definition of piping hot adjective from the Oxford Advanced Learner's Dictionary

 

piping hot

 adjective
adjective
BrE BrE//ˌpaɪpɪŋ ˈhɒt//
 
; NAmE NAmE//ˌpaɪpɪŋ ˈhɑːt//
 
 
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(of liquids or food) very hot Word Originpiping, because of the whistling sound made by very hot liquid or food.
See the Oxford Advanced American Dictionary entry: piping hot