Приклад:
The warmest clothes are made of real sheep's wool, not artificial fabrics like acrylic or rayon. 
Ліцензія на фото:
Ліцензія CC: Із зазначенням авторства, Комерційне використання
Regionalism:
Neutral
Regional variant:
Neutral
Full Expression:
The “ull” Sound (/ʊ/): wool
the hair of sheep and similar animals, which is often then processed to make clothes