ex-piscor, ātus, 1
* V. dep. a. (lit., to fish out; hence, trop.), to search out, find out (perh. only vulg.; syn.: rimor, perscrutor, scrutor, indago, investigo, quaero): proinde expiscare, quasi non nosses,Ter. Phorm. 2, 3, 35: nescis me ab illo omnia expiscatum?Cic. Fam. 9, 19, 1: simul atque audivit, a philosopho voluptatem tantopere laudari, nihil expiscatus est,he asked, inquired no further,id. Pis. 28, 69.

s. TLL