|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.|
Balfour Bal·four (bāl'f&oobreve;r', -fôr'), Francis Maitland. 1851-1882.
Scottish embryologist and zoologist noted for his studies of the development of the urogenital and nervous systems in vertebrates.