Because there is so many forced matings in several duck species, mallards being the most common example, females actually also have blind alleys that don't lead up to their ovaries and eggs.
Other observers may begin to wonder whether the National Curriculum in England, which since 2014 has made grammar such a central part of its English programme, might have gone down a blind alley.
At such moments my flesh is thin and tight, and the unbearable hunger to be part of it drives me out to search in the dark corners and blind alleys of the night.
No doubt the old man was irritated, but the excess even of his anger, the blind alley, as it were, in which he found himself, might determine an abrupt acceptance on his part.