Lewis Short
rĕcīprŏcātĭo (noun F) : reciproco.
* Lit., a going back upon itself, a returning by the same way, retrogression (postAug.): aestus,i. e. the reflux. ebb,Plin. 9, 8, 9, § 29: fili,id. 11, 24, 28, § 83: caprorum,id. 8, 50, 76, § 201: errantium siderum,Gell. 14, 1, 23.
* Trop., alternation, reciprocation: talionum,retaliation,Gell. 20, 1, 18: animorum,the transmigration of souls, metempsychosis,Tert. ad Nat. 1, 19.
* In gram., reciprocal action, in the pron. recipr., Prisc. p. 940 P.
Charlton T. Lewis, Charles Short, A Latin Dictionary