a precious stone, typically colourless, yellow, or pale blue, consisting of a fluorine-containing aluminium silicate 黄晶,黄玉 ■[mass noun]a dark yellow colour 黄玉色
a large tropical American hummingbird with a yellowish throat and a long tail 南美蜂鸟
Genus Topaza, family Trochilidae: two species 叉尾蜂鸟属,蜂鸟科:2种
语源
Middle English (denoting a yellow sapphire): from Old French topace, via Latin from Greek topazos