Definition of Malus in US English:

Malus

noun

  • A plant of the genus Malus (family Rosaceae), which consists of deciduous trees and shrubs grown ornamentally and for their fruit (apples and crab apples) in the temperate zones of both hemispheres; (in form Malus) the genus itself.

Origin

Early 18th century; earliest use found in Phillips's New World of Words. From classical Latin mālus apple tree.