空心儿 kōngxīnr hollow Definitions Defs Origin Strokes Stroke Words Sentences Sents kōngxīnr hollow 空心 kōngxīn adjective hollow hollow; having a central space inside (in contrast to solid)儿 兒 r particleaffix [erhua suffix] A suffix attached to a word to form a retroflex ending, often indicating a small size, a sense of familiarity, or turning a word into a noun.kōngxīnr empty-headed 空心 kōngxīn ignorant having nothing in mind; empty-headed; ignorant儿 兒 r particleaffix [erhua suffix] A suffix attached to a word to form a retroflex ending, often indicating a small size, a sense of familiarity, or turning a word into a noun.kōngxīnr on an empty stomach 空心 kòngxīn on an empty stomach on an empty stomach; without having eaten anything儿 兒 r particleaffix [erhua suffix] A suffix attached to a word to form a retroflex ending, often indicating a small size, a sense of familiarity, or turning a word into a noun.