[保齡球] 中央瓶;五號瓶
kingpin
n 1: the most important person in a group or undertaking [syn: {top
banana}, {bigwig}]
2: bolt that provides a steering joint in a motor vehicle [syn:
{kingbolt}, {swivel pin}]
3: the front bowling pin in the triangular arrangement of ten
pins [syn: {headpin}]