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Cul-de-sac

//ˈkʌldəsæk// noun

Noun

1
A blind alley or dead end street.
"Before we had gone fifty yards we perceived that all hopes of getting further up the stream in the whale-boat were at an end, for not two hundred yards above where we had stopped were a succession of shallows and mudbanks, with not six inches of water over them. It was a watery cul de sac."
2
A circular area at the end of a dead end street to allow cars to turn around, designed so children can play on the street, with little or no through-traffic.
"And in suburbs known for new development, preservationists are often battling a general perception that there is nothing historic or worth saving among the cul-de-sacs."
3
An impasse. figuratively
"Physics seems, in fact, to have got itself into a cul-de-sac, obsessing over theories so mathematically abstruse that nobody even knows how to test them."
4
A sacklike cavity, a tube open at one end only.

Borrowed from French cul-de-sac, from cul (“bottom”) + de (“of”) + sac (“bag, sack”).

Unscramble this word: culdesac