sennit

noun

1. (countable, uncountable)braided cord or fabric of such small stuff as plaited rope yarns
2. (countable, uncountable)plaited or braided straw or grass which is used for making hats and for a variety of ornamental crafts

   “In the 19th century British sailors wore sennit or sennet hats. Originally made by the sailors themselves they could be waterproofed with tar.”