Definition of pelican's foot in US English:

pelican's foot

noun

  • (More fully "pelican's foot shell") a marine gastropod mollusc of the family Aporrhaidae, especially Aporrhais pespelecani, having a long conical spire and a flared outer lip with four finger-like projections.

Origin

Early 19th century; earliest use found in Edward John Burrow (1785–1861), Church of England clergyman and author.