| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
"This put a strange Whim in his Head; which was, to get the hairy circle of [a prostitute's] Merkin .... This he dry'd well, and comb'd out, and then return'd to the Cardinall, telling him, he had brought St. Peter's Beard." [Alexander Smith, "A Complete History of the Lives and Robberies of the most notorious Highwaymen," 1714]