Definition of eggar in English:

eggar

noun

  • A large brownish moth which is often active during the day.

    • ‘I'm fairly sure this is the caterpillar of an oak eggar moth, but I would welcome being corrected.’
    • ‘The Small Eggar moth is another rarity found only in this part of Shropshire.’
    • ‘Adult oak eggars are also preyed upon by several birds, particularly black-headed gulls.’

Origin

Early 18th century: probably from egg (from the shape of the caterpillar's cocoon) + -er.

Pronunciation

eggar

/ˈɛɡə/