/ˈæmbə(r) ||; ˈæmbɚ/noun [U]:
1 a hard clear yellow-brown substance used for making jewellery or objects for decoration 琥珀（用以制造首饰或饰物）
2 a yellow-brown colour 黄褐色:
The three colours in traffic lights are red, amber and green. 交通灯的三种颜色是红、黄、绿。
amber adj