Definition of "whalehead"

The shoebill, whalehead or boatbill, as it is sometimes called, is one of Africa's strangest and rarest endemics.

1999, Christ Stuart, Birds of Africa: From Seabirds to Seed-eaters, page 40

The strong north winds pile the sands up into great barchannes or medanoes, crescentic sand dunes known locally as whaleheads, which are moving steadily southward.

1912, William Bullock Clark, The Coastal Plain of North Carolina, page 32

Huge dunes, called “whaleheads” by locals, developed on Hatteras during this time and swept across the island.

2013, Renee Wright, Explorer's Guide North Carolina's Outer Banks & Crystal Coast