retroflex/ˈretrəfleks; `rɛtrəˌflɛks/ (also retroflexed /-kst; -kst/) adj [attrib 作定语](phonetics 语音) (of a sound) made by bending the tip of the tongue upwards and backwards （指声音）卷舌的, 卷舌音的.
牛津英汉双解词典