thumbprint
UK/ˈθʌmprɪnt/US/ˈθʌmprɪnt/
释义
n.
1.拇指指纹；拇指印
2.（喻）独特的特征或标志
词源
概述
该词是英语中两个基础名词的直白组合，诞生于指纹识别技术普及的19世纪。thumb 指代具体的手指，print 描述其压印后留下的独特痕迹。两者结合，字面意为“拇指留下的印记”，精准定义了这种生物特征。其后词义自然扩展，用以比喻任何事物独一无二的、可识别的特征，体现了从具体物理痕迹到抽象属性标志的逻辑演变。
例句
“The contract was signed and sealed with his thumbprint.”
合同上有他的拇指画押为证。
“Each director brings their own unique thumbprint to the film.”
每位导演都为这部电影打上了自己独特的烙印。
“Forensic experts were able to match the thumbprint found at the scene to the suspect.”
法医专家成功将现场发现的拇指指纹与嫌疑人匹配上了。