Definition of chuck-will's-widow in US English:

chuck-will's-widow

noun

  • A large nightjar native to eastern North America.

    "Caprimulgus carolinensis", family "Caprimulgidae"

    • ‘Only rarely are chuck-will's-widows found during the daytime; most records are for night-singing birds.’
    • ‘A large nightjar of the southeastern United States, the Chuck-will's-widow is well known for its continuous singing of its name at dusk.’
    • ‘Chuck-will's-widows migrate in Texas from late March through early May and will initiate breeding soon after arriving on their breeding grounds.’

Origin

Late 18th century: imitative of its call.

Pronunciation

chuck-will's-widow

/ˌCHək ˌwilz ˈwidō/