The headword as transmitted is a present middle/passive participle in the feminine accusative singular. It is perhaps quoted from somewhere as such, though the gloss is identical with the one on Sophocles, Ajax 225, where the phrase u(/po klh|zome/nan occurs (see web address 1).
This composite verb is attested only here; for klhi/+zw see kappa 1773, kappa 1774 and kappa 1775.