| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a gadget; dingus; thingumbob. |
thirteenth (ˈθɜːˈtiːnθ) ![]() | |
| —adj | |
| 1. | (usually prenominal) |
| a. coming after the twelfth in numbering or counting order, position, time, etc; being the ordinal number of thirteen: often written 13th | |
| b. (as noun): Friday the thirteenth | |
| —n | |
| 2. | a. one of 13 equal or nearly equal parts of something |
| b. (as modifier): a thirteenth part | |
| 3. | the fraction equal to one divided by 13 (1/13) |
| 4. | music |
| a. See also interval an interval of one octave plus a sixth | |
| b. short for thirteenth chord | |