IPA: /ˈwɛli/
KK: /ˈwɛli/
A type of waterproof boot that is usually made of rubber and is worn for outdoor activities, especially in wet or muddy conditions.
She wore her wellies to the farm to keep her feet dry in the muddy fields.
The word 'welly' originates from the term 'wellington boot', named after the Duke of Wellington, who popularized this style of waterproof boot in the early 19th century. The term 'wellington' itself is derived from the name of the Duke, Arthur Wellesley, the 1st Duke of Wellington.
Think of the Duke of Wellington, who made these waterproof boots popular — that's why we call them 'welly'.