| Word | Definitions | Synonyms |
|---|---|---|
| cirrus | (noun) a slender flexible animal appendage as on barnacles or crinoids or many insects; often tactile | - |
| (noun) a wispy white cloud (usually of fine ice crystals) at a high altitude (4 to 8 miles) | Synonyms: cirrus cloud | |
| (noun) usually coiled | Synonyms: cirrhus | |
| susurrus | (noun) the indistinct sound of people whispering | Synonyms: susurration |