| an arrangement of five objects, as trees, in a square or rectangle, one at each corner and one in the middle. |
| a children's mummer's parade, as on the Fourth of July, with prizes for the best costumes. |
protoplast pro·to·plast (prō'tə-plāst')
n.
The living material of a plant or bacterial cell, including the protoplasm and plasma membrane after the cell wall has been removed.
One that is the first made or formed; a prototype.