粤典 (words.hk)香港词
中指掂住拇指，其餘三指鬆開嘅手勢；喺宗教儀式、舞蹈或者傳統戲劇等會用，亦係「八」嘅手語 (a hand gesture that only the middle finger touches the thumb; literally: orchid hand)
名詞用例
學友唱歌成日舉蘭花手。
hok6 jau5 coeng3 go1 seng4 jat6 geoi2 laan4 faa1 sau2.
Jacky Cheung often touches his thumb to his middle finger when he sings.