Lewis & Short

rĕ-sălūto, āvi, ātum, 1, v. a., to greet or salute in return, return a salutation, Cic. Phil. 2, 41, 106; Mart. 5, 21, 3; 5, 57, 2; 10, 70, 5; Petr. 44, 10; Sen. Tranq. 12; Vulg. Gen. 43, 27.