| a screen or mat covered with a dark material for shielding a camera lens from excess light or glare. |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
pronucleus pro·nu·cle·us (prō-n&oomacr;'klē-əs, -ny&oomacr;'-)
n.
One of two nuclei undergoing fusion in karyogamy.
The haploid nucleus of a sperm or egg before fusion of the nuclei in fertilization.