Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
1. bătŭs (bătŏs), i, f., = βάτος, the blackberry-bush, App. Herb. 87; Paul. ex Fest. p. 30, 15 Müll.; esp., batos Idaea = βάτος Ἰδαία, the raspberry-bush, App. Herb. 87.