01 prep. Across; from side to side of.
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1.
Across; from side to side of.“Athwart the thicket lone.” — Tennyson.
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2.
Across the direction or course of; as, a fleet standing athwart our course.(Naut.)
Phrases & compounds
Athwart hawse —
across the stem of another vessel, whether in contact or at a small distance.
Athwart ships —
across the ship from side to side, or in that direction; -- opposed to fore and aft.