thousandyoudaoicibaDictYouDict[thousand 词源字典]
thousand: [OE] Thousand is a compound noun of some antiquity, which seems to mean etymologically ‘several hundreds’. Its first element probably comes from a base denoting ‘increase’ or ‘multiplicity’, which also produced Latin tumēre ‘swell’ (source of English tumour) and Sanskrit tuvi ‘much’; its second element is the same as the first element of English hundred. The combination resulted in a prehistoric Germanic *thusundi, which evolved into German tausend, Dutch duizend, Swedish tusen, Danish tusind, and English thousand. It is shared by the Slavic languages – Russian, for instance, has tysjacha.
=> hundred, thigh, thumb, tumour[thousand etymology, thousand origin, 英语词源]
cotton-picking (adj.)youdaoicibaDictYouDict
as a deprecatory term first recorded in a Bugs Bunny cartoon, but a similar noun meaning "contemptible person" dates to around 1919, perhaps with racist overtones that have faded over the years. Before mechanization, cotton picking was the most difficult labor on a cotton plantation.
I drove out to a number of the farms near Denison and found many very young white children working all day in the hot sun picking and dragging sacks of cotton. In one field the labor corps consisted of one woman and six children, one of them 5 years, one 6 years, one 7 years, one 9 years, and two about 11. The father was plowing. The 5 and 6 year olds worked all day as did the rest. The 7-year-old said he picked 50 pounds a day and the 9 year old 75 pounds. (A good picker averages several hundred a day.) School begins late on account of the cotton picking, but the children nearly all prefer school to the picking. Picking hours are long, hot, and deadly monotonous. While the very young children seem to enjoy it, very soon their distaste for it grows into all-absorbing hatred for all work. ["Field Notes of Lewis W. Hine, Child-Labor Conditions in Texas," report to U.S. Congressional Commission on Industrial Relations, 1916]
thousand (adj.)youdaoicibaDictYouDict
Old English þusend, from Proto-Germanic *thusundi (cognates: Old Frisian thusend, Dutch duizend, Old High German dusunt, German tausend, Old Norse þusund, Gothic þusundi).

Related to words in Balto-Slavic (Lithuanian tukstantis, Old Church Slavonic tysashta, Polish tysiąc, Russian tysiacha, Czech tisic), and probably ultimately a compound with indefinite meaning "great multitude, several hundred," literally "swollen-hundred," with first element from PIE root *teue- (2) "to swell" (see thigh).

Used to translate Greek khilias, Latin mille, hence the refinement into the precise modern meaning. There was no general Indo-European word for "thousand." Slang shortening thou first recorded 1867. Thousand island dressing (1916) presumably is named for the region of New York on the St. Lawrence River.