bobble

Noun

• A furry ball attached on top of a hat.
• Elasticated band used for securing hair (for instance in a ponytail), a hair tie
• A pill (a ball formed on the surface of the fabric, as on laundered clothes).
• A localized set of stitches forming a raised bump.
• A wobbling motion.

Verb

• To bob up and down.
• To make a mistake in.
• To roll slowly.