ὀιστός
From LSJ
μήτε δίκην δικάσῃς πρίν ἀμφοῖν μῦθον ἀκούσῃς → do not give your judgement until you have heard a speech on both sides
English (Autenrieth)
(οἴσω, φέρω): arrow. Made of wood, or a reed, with barbed metal point, the lower end feathered and notched (γλυφίδες), or with projections, enabling the fingers to take a firm hold on the arrow in drawing. Poisoned arrows are mentioned only exceptionally, Od. 1.261, Il. 4.213.
English (Slater)
ὀιστός arrow met., of song. τίνα βάλλομεν εὐκλέας ὀιστοὺς ἱέντες; (O. 2.90) πτερόεντα δ' ἵει γλυκὺν Πυθῶνάδ ὀιστόν (O. 9.12)
Middle Liddell
an arrow, Hom., Hes., etc. [deriv. uncertain]