1
- a dark mark or stain, typically one made by ink, paint, or dirt墨水迹; 油漆斑; 污渍：
an ink blot.
墨渍。
1.1
- a shameful act or quality that tarnishes an otherwise good character or reputation（品性、名誉上的）污点, 耻辱：
the only blot on an otherwise clean campaign.
在其他方面堪称清白的运动中的唯一污点。
1.2
- a thing that mars the beauty or perfection of something有损（整体）美感的东西, 瑕疵, 美中不足：
wind power turbines are a blot on the landscape.
风力涡轮机有损美好风景。
1.3
- Biochemistry a procedure in which proteins or nucleic acids separated on a gel are transferred directly to an immobilizing medium for identification【生化】印迹法。
(blotted, blotting)with obj.
1
- dry (a wet surface or substance) using an absorbent material（用吸水材料）吸干, 擦干：
Henry blotted the page.
亨利把那一页用吸湿材料擦干了。
1.1
- Biochemistry transfer by means of a blot【生化】印迹。
2
- mark or stain (something)弄脏, 涂污：
as adj. blotted the writing was messy and blotted.书写乱七八糟, 墨渍斑斑。
2.1
- tarnish the good character or reputation of玷污…的品性（或名誉）：
the turmoil blotted his memory of the school.
骚乱破坏了他对那所学校的美好记忆。
3
blot something out
cover writing or pictures with ink or paint so that they cannot be seen（用墨水）涂去（字迹）, （用颜料）盖去（图画）。
3.1
- obscure a view使模糊, 遮蔽：
a dust shield blotting out the sun.
挡去阳光的防尘装置。
3.2
- obliterate or disregard something painful in one's memory or existence从记忆中抹去, 丢弃：
the concentration necessary to her job blotted out all the feelings.
她的工作需要精神集中, 这使她没有任何感觉。
短语
blot one's copybook
- Brit. tarnish one's good reputation玷污自己的名声, 给自己抹黑。
词源
late Middle English: probably of Scandinavian origin and related to Old Norse blettr.