IPA: //ˈkæstər//
KK: /ˈkæstər/
A type of hat made from beaver fur or a similar material, often used for warmth and style.
He wore a stylish castor hat to the winter party.
Castor originates from Latin 'castor' (meaning beaver), which is derived from the Greek 'kastor' (meaning beaver as well). The word refers specifically to the animal known for its ability to build dams and lodges in water bodies.
Think of the Latin word for beaver, 'castor', to remember that 'castor' refers to this industrious animal.