punctum meaning in English

n.
(pl. -ta ) 【解，植】细穿孔，点，斑点，刻点。

In this report , we present two cases of basal cell carcinoma which invaded the medial side of the lower eyelid and lower punctum
本篇报告两个侵犯下眼睑内侧及泪孔之基底细胞癌的病例。
There is nothing to suggest , at least initially , that this is anything but a sentimental punctum of the family
没有任何东西来暗示观众这一幕不是家庭生活的一个动人场景，至少开头没有。
This ambiguity in turn gives the image multiple meanings . what we know and the truth are in conflict with each other . the image that develops through the photographic process is the punctum where we depart from the knowledge we gained from experience to interpret what we feel and see by means of intuition
影像的魅力正就是尽在不言中，而影像的暧昧性，使影像呈现出多重的意义，认知和真理（本体）常常充满矛盾，摄影在过程之间所呈现的虚像，正正是我们从经验的认知层面，用直觉的方式去注释我们所感觉（视觉）的刺点。