check out

CIDE DICTIONARY

check out, v. i. 

•  To vacate a room at a hotel, notel, etc. Converse of check in.  [PJC]
•  To die.  [PJC]

check out, v. t. 

•  To inspect or examine.  [PJC]
•  To make a record of having borrowed (something) for temporary use; as, to check out a book at the library; to check out equipment from a depository.  [PJC]
•  To bring (items to be purchased) to a checkout counter (as at a supermarket or other retail store) where the prices may be totaled and the bill may be paid.  [PJC]

THESAURUS

check out

audit, autopsy, balance, balance the books, buy it, canvass, cash in, check, check and doublecheck, check in, check over, check up on, clock out, collate, confirm, conform, conk, correspond, croak, cross-check, demonstrate, die, double-check, dovetail, drop, drop off, examine, fit in, gee, give an examination, go over, go west, harmonize, have it, have the qualifications, inspect, inventory, jibe, kick in, kick off, kick the bucket, knock off, look at, look over, measure up, monitor, observe, overhaul, overlook, pass, pass away, pass out, pass over, pass under review, peer at, peg out, peruse, pipe off, pop off, pore over, postmortem, prove, punch out, qualify, recheck, review, ring out, run over, scan, scrutinize, set an examination, shove off, sign out, size, size up, square, step off, study, survey, take stock, take stock of, take the measure, tally, test, triple-check, validate, verify

ROGET THESAURUS

check out

Experiment

VB experiment, essay, try, try out, assay, make an experiment, make a trial of, give a trial to, put on trial, subject to trial, experiment upon, rehearse, put to the test, bring to the test, submit to the test, submit to the proof, prove, verify, test, touch, practice upon, try one's strength, road-test, test drive, take for a spin, test fly, grope, feel one's way, grope for one's way, fumble, t=atonner, aller =a t=atons, put out a feeler, throw out a feeler, send up a trial balloon, send up a pilot balloon, see how the land lies, get the lay of the land, test the waters, feel out, sound out, take the pulse, see, check, check out, see how the wind blows, consult the barometer, feel the pulse, fish for, bob for, cast for, beat about for, angle, trawl, cast one's net, beat the bushes, try one's fortune, explore.