柯林斯詞典ticktack /?t?k?t?k/ 1. N a system of sign language, mainly using the hands, by which bookmakers transmit their odds to each other at racecourses (賽馬場上賽馬登記賭注者間傳達(dá)投注賠率的)手勢信號[英國英語] 返回 ticktack