Oxford Dictionary English piping hot adjectiveadjective BrE BrE//ˌpaɪpɪŋ ˈhɒt// ; NAmE NAmE//ˌpaɪpɪŋ ˈhɑːt// Add to my wordlistjump to other results(of liquids or food) very hot Word Originpiping, because of the whistling sound made by very hot liquid or food.See piping hot in the Oxford Advanced American DictionaryCheck pronunciation: piping hot oxfordlearnersdictionaries.com