See also alpha 995, alpha 997 (with this same etymology), alpha 998, eta 183.
The present headword -- presumably quoted from somewhere (the few extant instances are all late) -- is transmitted both here and in some other lexica (e.g. Photius) as a)kroboli/zetai, i.e. third person singular, present indicative, of this middle-voice verb; however, the glossing elsewhere is different, and sometimes so is the headword (infinitive a)kroboli/zwsqai in e.g. Hesychius).
[1] That is, active voice rather than middle, with omega (not omicron) as the second vowel, and epsilon rather than omicron as the third vowel.