rasta hat

noun

noun

A loose knitted hat, typically in bright colours, often the colours of the Jamaican flag, designed to hold in dreadlocks.

Some are more popular than others - woolly rasta hats are high on the list, as are little floppy khaki ones.1980, Bill Oddie, Bill Oddie's Little Black Bird Book, page 61:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.