| CY | type genus of Cyperaceae |
|---|---|
| CY | African sedge widely cultivated as an ornamental water plant for its terminal umbrellalike cluster of slender grasslike leaves |
| CY | European sedge having small edible nutlike tubers |
| CY | European sedge having rough-edged leaves and spikelets of reddish flowers and aromatic roots |
| CY | tall sedge of the Nile valley yielding fiber that served many purposes in historic times |
| CY | a widely distributed perennial sedge having small edible nutlike tubers |
| CY | a message written in a secret code |
| CY | a secret method of writing |
| CY | a person of no influence |
| CY | a quantity of no importance |
| CY | a mathematical element that when added to another number yields the same number |
| CY | make a mathematical calculation or computation |