'Phylum' definitions:

Definition of 'phylum'

From: WordNet
noun
(linguistics) a large group of languages that are historically related
noun
(biology) the major taxonomic group of animals and plants; contains classes

Definition of 'Phylum'

From: GCIDE
  • Phylum \Phy"lum\, n.; pl. Phyla. [NL. See Phylon.]
  • 1. (Zool.) One of the larger divisions of the animal kingdom; a branch; a grand division. [1913 Webster]
  • 2. (Biol.) A series of animals or plants genetically connected. [Webster 1913 Suppl.]