tuft

noun

• a bunch or collection of something, typically threads, grass, or hair, held or growing together at the base:scrubby tufts of grass
• Anatomy & Zoology a bunch of small blood vessels, respiratory tentacles, or other small anatomical structures.

verb

• 1 (usually be tufted) provide (something) with a tuft or tufts.

• 2 Needlework make depressions at regular intervals in (a mattress or cushion) by passing a thread through it.