Read Edit View history 凹槽 āocáo groove Origin Definitions Defs Strokes Stroke Words Sentences Sents Senses Add sense 凹槽 āocáo groove groove; notch; recess; trough; canal; socket Edit Delete 凹槽 āocáo recessed (of a surface) having a recessed or concave profile; grooved Edit Delete References Add reference No references for this word.