嘚

dē:* 象声词，形容马蹄踏地的声音。 dēi:* 〔～儿（ dēir ）〕赶驴、骡前进的吆喝声

(translated) Onomatopoeic, describing the sound of horse hooves stamping on the ground; An exclamation used to urge donkeys and mules forward, often in the expression "嘚儿 (dēir)"