thumbprint
n. 拇指指纹;印章;个性特征
复数 thumbprints
例句
It's got your thumbprint all over it.
到处都有你参与其中的痕迹。
《柯林斯英汉双解大词典》
And who better to fake a Thumbprint killing than you?
还有谁能比你伪装得更像“拇指纹杀手”?
Next to each place I signed, I put a green-ink thumbprint.
在每一处签名的地方,我按下了绿色的拇指手印。