Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. ampĕlŏs, i, f., = ἄμπελος, a vine, grape-vine (used technically; in pure Lat. vitis).
2. Ampĕlŏs, i, f.
3. Ampĕlŏs, i, m., a beautiful youth, loved by Bacchus, Ov. F. 3, 409.