Noun:
* A frill or fold of fabric: "The dress had a ruffle around the neckline."
* A disturbance or commotion: "There was a ruffle in the audience after the announcement."
Verb:
* To make something wrinkled or uneven: "The wind ruffled her hair."
* To disturb or upset: "The news ruffled his feathers."
The meaning depends on the context in which it is used.