The headword, presumably extracted from the quotation given, is present middle participle, feminine nominative singular, of the verb lordo/w, for which see also lambda 681. (cf. also lambda 678, lambda 679.) Beginning -- as attested -- in Attic Comedy, the verb "refers to a position in which the woman bends backwards and thrusts her hips forwards" (Henderson 178-181, at 178). It is the opposite of ku/ptw.
[1] Procopius, Secret History 9.23 (where the present reading a)pokontw=sa, 'thrusting out', makes better sense than the variant a)pokentw=sa, 'penetrating'; see web address 1); cf. Kaldellis (43). Prior to her marriage to Justinian (cf. iota 446), Theodora (cf. alpha 956 note) had been an actress.
[2] cf. lambda 679.