"zero","(名) ゼロ(数字の０)"
"zap","(他動) 殺す"
"zipper","(名){米} ジッパー"
"zone","(名) 地帯"
"zoo","(名) 動物園"
"zoom","(自動) 拡大する [in] ･ 縮小する [out]"
"zeal","(名) 熱意"
"zealous","(形) 熱心な"