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Either of two beams or fins fastened lengthwise along the outside of a ship's bilge to inhibit heavy rolling.
(Nautical Terms) one of two keel-like projections along the bilges of some vessels to improve sideways stability
a keellike projection along a ship's bilge to retard rolling.
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|Noun||1.||bilge keel - either of two lengthwise fins attached along the outside of a ship's bilge; reduces rolling|
keel - one of the main longitudinal beams (or plates) of the hull of a vessel; can extend vertically into the water to provide lateral stability