bitumen

詳細解釋：

bi.tu.men

n.（名詞）
Any of various flammable mixtures of hydrocarbons and other substances, occurring naturally or obtained by distillation from coal or petroleum, that are a component of asphalt and tar and are used for surfacing roads and for waterproofing.
瀝青，柏油：一種碳氫化合物和其他物質的易燃混合物，自然產生或通過蒸餾煤或石油而獲得，是瀝青和焦油的混合物，用於鋪路和防水

來源：
Middle English bithumen [a mineral pitch from the Near East]
中古英文 bithumen [近東的一種瀝青]
from Latin bitômen
源自 拉丁語 bitômen
[perhaps of Celtic origin]
[可能源於凱爾特語的]

【引伸】
bitu.minoid.