Definition of big laurel in US English:

big laurel

noun

US
  • 1The large-flowered or southern magnolia, Magnolia grandiflora, native to the southeastern U.S.

  • 2A rhododendron of eastern North America, Rhododendron maximum, which makes a large shrub or small tree.

Origin

Early 19th century; earliest use found in François André Michaux (1770–1855).