Definition of finger lime in English:

finger lime

noun

  • A thorny shrub or small tree, Citrus australasica (family Rutaceae), native to coastal regions of northeast Australia; (also) the cylindrical citrus fruit of this tree, having green, purple, or pink skin and juicy, large-celled pulp with a sour taste resembling that of lime.

Origin

Late 19th century; earliest use found in Frederick Bailey (1827–1915).