Same entry (minus the grammatical point) in other lexica; see the references at Photius theta222 Theodoridis. The headword is aorist active participle, masculine nominative singular, of the verb qriambeu/w. It must be quoted from somewhere; Theodoridis suggests Gregory of Nazianzus, Speech 40.47 (PG 36.397a), but perhaps there is a more obvious candidate in the New Testament (Colossians 2.15).
See also theta 492, theta 494.