Culdoscope Culdoscope Culdoscope is an instrument, a kind of endoscope, used to visualize female pelvic organs, introduced through the vagina into the cul-de-sac (which is also called the rectouterine pouch or the pouch of Douglas). The procedure of inserting the culdoscope into the rectouterine pouch is termed culdoscopy. The word culdoscope (and culdoscopy) is derived from the phrase cul-de-sac, which in French literally means "bottom of a sac", here referring to a blind pouch or cavity in the female body that is closed at one end, that is the rectouterine pouch. As early as the 13th century, a cul-de-sac was a
Letting the cat out of the bag and consider it "nigh on impossible to mistake a cat for a pig," though this ignores the history of the phrase "buy a cat for a hare". Letting the cat out of the bag Letting the cat out of the bag or out of the box is a colloquialism meaning to reveal facts previously hidden. The facts were usually hidden from a specific target audience or theatrical audience. Examples include: The derivation of the phrase is not clear. One suggestion is that the phrase refers to the whip-like "cat o'nine tails", an instrument of punishment once used on Royal Navy