interdigitate
/ˌɪntəˈdɪdʒɪteɪt/verb
no obj.
- (of two or more things) interlock like the fingers of two clasped hands（如双手紧握时十指交叉似的）相互交错：
as adj. interdigitating interdigitating metal bars.相互交错的金属棒。
词源
mid 19th cent.: from inter- 'between' + digit + -ate3.