出典:Wiktionary
Middle English, variant of Cheetham, from historical Cheetham in Lancashire, from Chet + ham; first element from Brythonic/Celtic *cęd (“wood, forest”), from Proto-Celtic *kaitos, from Proto-Indo-European *kayt-, *ḱayt- (“forest, wasteland, pasture”), related to Latin bū-cētum (“pastureland”, literally “cow-pasture”).