Definition of propinque:
1904: Some experimental spirits could not resist the diversion of throwing Varick and his former wife together, and there were those who thought he found a zest in the propinquity. -- Edith Wharton, "The Other Two"
"1979: [A] person's mere propinquity to others independently suspected of criminal activity does not, without more, give rise to probable cause to search that person. Ybarra v. Illinois, 444 U.S. 85, 86 (1979)."