/con.tact /   \ˈkän-ˌtakt\ /F or L ; F, fr. L /contactus/, fr. /contingere/

1 a : union or junction of surfaces b : the apparent touching  or mutual tangency of the limbs of two celestial bodies or of the disk of one body with the shadow of another during an eclipse, transit, or occultation c  (1) : the junction of two electrical conductors through which a current passes (2) a special part made for such a junction 

2 a : ASSOCIATION, RELATIONSHIP b : CONNECTION, COMMUNICATION c : an establishing of communication with someone or an observing or receiving  of a significant signal from a person or object < Eddy's t-shirt ~ YOU>

3 a : serving as a go-between , messenger, connection, or source of special information < Eddy's ~ art for the people>