Green’s Dictionary of Slang

reach n.

1. (US campus) someone who is out of touch with reality [? they are reaching for the stars].

[US]Eble Campus Sl. Nov. 7: reach – stupid person who makes a fool of himself.

2. (US police/und.) an offer to bribe or to enter into a corrupt relationship.

[US]B. McCarthy Vice Cop 113: [I]t would be time for McCarthy to take a stand or get on the pad. He was sure that the ‘reach’ was about to be made [...] I was literally waiting for the first nibble, the first good payoff reach.