1) to make a trial of, to attempt
1a) taught by trial, experienced
2) to test, to make trial of one, put him to proof
2a) his mind, sentiments, temper
2b) in particular, to attempt to induce one to commit some (especially carnal) crime
2c) tempted to sin
Part of Speech: verb
Citing in TDNT: 6:23, 822
From G3984; to test (subjectively), that is, (reflexively) to attempt: - assay.
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root πειράω; click on the second column to search for that grammatical form of the root πειράω; click on the third column to search for that word and grammatical form; click on the total to search for the root πειράω.