1) sacrificed to idols, the flesh left over from the heathen sacrifices
1a) it was either eaten at the feasts or sold (by the poor and the miserly) in the market
Part of Speech: adjective
Citing in TDNT: 2:378, 202
Neuter of a compound of G1497 and a presumed derivative of G2380; an image sacrifice, that is, part of an idolatrous offering: - (meat, thing that is) offered (in sacrifice, sacrificed) to (unto) idols.
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 εἰδωλόθυτον; click on the second column to search for that grammatical form of the root εἰδωλόθυτον; click on the third column to search for that word and grammatical form; click on the total to search for the root εἰδωλόθυτον.