|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.|
hamartia ha·mar·ti·a (hä'mär-tē'ə, hə-mär'shē-ə)
A developmental defect characterized by the abnormal arrangement or combination of tissues normally present in a specific area.
(hamartia from Greek hamartanein, "to err"), inherent defect or shortcoming in the hero of a tragedy, who is in other respects a superior being favoured by fortune.
Learn more about hamartia with a free trial on Britannica.com.