nexus
n.
1660s, "bond, link, means of communication," from Latin nexus "that which ties or binds together," past participle of nectere "to bind," from PIE root *ned- "to bind, tie" (see net, n.).
〔李〕[nex;-usn.] n.连结； 联系； 关系 ←nect,nex (L nectere,nexum)=to bind 束，绑