noun
felt; woollen cloth
Refers to a thick, soft fabric made from wool or similar fibers, often used for coats, hats, or craft projects.
from Portuguese raxa
この帽子はラシャでできている。
This hat is made of felt.
祖母はラシャのコートを大切にしている。
My grandmother treasures her woollen coat.
フェルト is a more general term for felt, often used for craft materials, while ラシャ specifically refers to a thicker, higher-quality woollen cloth with a soft nap.
Borrowed from Portuguese 'raxa', a type of woollen cloth. The kanji 羅紗 are ateji.