| blue-sky law | |
| —n | |
| (US) a state law regulating the trading of securities: intended to protect investors from fraud | |
| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison. |