英语词源字典 - 在线词源网站

lawn [lawn 词源字典]: lawn: English has two words lawn. ‘Grassy area’ [16] is ultimately the same word as land. It is an alteration of an earlier laund ‘glade’, which came from Old French launde ‘heath’, a borrowing from the same prehistoric Germanic source as produced English land. Lawn was originally used for ‘glade’ too, and it was not until the 18th century that its present-day meaning emerged. Lawn ‘fine linen or cotton’ [15] probably comes from Laon, the name of a town in northern France where linen was formerly manufactured.
=> land[lawn etymology, lawn origin, 英语词源]
sleaze: sleaze: [20] It is common practice to name fabrics after their place of manufacture, and from the 17th century that applied to cloth made in Silesia (a region in east-central Europe, now mainly within Poland), and in particular to a type of fine linen or cotton. It did not take long for Silesia to be worn down to Slesia or Sleasia and finally to Sleasie. Also in the 17th century we find sleasie being applied as an adjective to fabrics that are thin or flimsy, and although a connection between the two usages has never been proved, the closeness of meaning seems unlikely to be coincidental.

Soon sleasie (or sleazy) was being used metaphorically for ‘slight, flimsy, insubstantial’. It took a sudden sideways semantic leap in the 1930s and 40s when it began to be used as a term of moral disapproval, denoting squalor, depravity or slatternliness, and it was in this sense that the back-formed noun sleaze first emerged in the 1960s. Then in the 1980s the word shifted its target from sex to financially motivated misdemeanours, notably the taking of bribes (the new usage is first recorded in ‘The sleaze factor’, a chapter heading in the book Gambling with History (1983) by the US journalist Laurence Barrett).
hairline (n.): also hair-line, "cord made of hair," 1731, from hair + line (n.). Meaning "a very fine line" is from 1846. As "the outline of the hair on top of the head," by 1903. As an adjective, of cracks, etc., 1904.