Additions to window over sink? Not something I can comment on perhaps

Wikipedia Word definitions in Wikipedia
Blind spot or Blindspot may refer to:

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
1864, "spot within one's range of vision where yet one cannot see." Of flaws in the eye, from 1872; figurative sense in use by 1907.

WordNet Word definitions in WordNet
n. a subject about which you are ignorant or prejudiced and fail to exercise good judgment; "golf is one of his blind spots and he's proud of it" the point where the optic nerve enters the retina; not sensitive to light [syn: optic disc , optic disk ]

Longman Dictionary of Contemporary English Word definitions in Longman Dictionary of Contemporary English
noun EXAMPLES FROM OTHER ENTRIES ▪ Critics accuse him of having a blind spot on issues of ethics. EXAMPLES FROM CORPUS ▪ He knew if some one was standing in the blind spot directly behind him, he was in trouble. ▪ It is as though the panel has developed ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Blind \Blind\, a. [AS.; akin to D., G., OS., Sw., & Dan. blind, Icel. blindr, Goth. blinds; of uncertain origin.] Destitute of the sense of seeing, either by natural defect or by deprivation; without sight. He that is strucken blind can not forget The precious ...