phylum
/ˈfaɪləm/noun
(pl. phyla /-lə/)
1- Zoology a principal taxonomic category that ranks above class and below kingdom, equivalent to the division in botany【动】（生物分类）门。
1.1
- Linguistics a group of languages related to each other less closely than those forming a family, especially one in which the relationships are disputed or unclear【语言学】语群。
词源
late 19th cent.: modern Latin from Greek, phulon 'race'.