Noun
Four Species pl (plural only)
The four plant-parts shaken as a unit on Sukkot
Four species of penguins that breed in Antartica are endangered by global warming. Even I, the only man in the world who can get angry from looking at a picture of a penguin, find this bad news. Richard Stallman
This day is marked by a special synagogue service in which seven circuits are made by worshippers holding their Four Species, reciting Psalm 118:25 with additional prayers. Source: Internet