keel

• اسم يدل على العارضة الطولية الممتدة على طول قاع السفينة أو القارب، أو على نتوء عظمي شبيه بالعارضة في عظم صدر الطيور، أو على أي حرف أو نتوء بارز على سطح.

A noun referring to a longitudinal structural member along the bottom of a ship or boat, or a similar ridge on the breastbone of flying birds, or any ridge projecting from a surface.

1. ridge or projectionB2formaltechnical

   A natural or artificial ridge that resembles the structure of a ship's keel, often found in anatomy, geology, or design.

   حرف أو نتوء

   • The fossil had a prominent keel along its back.
   • The mechanical part featured a central keel for reinforcement.
   • In some plants, the leaf has a keel-shaped midrib.

   المرادفاتcarinacrestridgespine

2. bird's breastbone keelC1formalscientific

   The median ridge on the sternum (breastbone) of flying birds to which flight muscles attach.

   القص الغُرابي

   • The ornithologist pointed out the well-developed keel on the eagle's skeleton.
   • Flightless birds like ostriches have a reduced or absent keel.
   • The keel provides a stable anchor for powerful wing muscles.

   المرادفاتcarina

3. ship's keelB2formaltechnical

   The main longitudinal structural element of a ship's hull, running from bow to stern, providing stability and strength.

   كيل السفينة

   • The ship's keel was laid down in the dry dock.
   • Damage to the keel can cause serious instability at sea.
   • Modern vessels often have a bulbous keel for better hydrodynamics.

• فعل يعني انقلاب الشيء أو انقلابه رأسًا على عقب، ويُستخدم غالبًا في السياق البحري عند انقلاب السفينة؛ كما يُستعمل مجازًا للدلالة على السقوط أو الانهيار.

A verb meaning to turn over or capsize, typically used in nautical contexts; also used figuratively to mean to collapse or fall down.

1. Stagger or swayB2informal

   To walk or move unsteadily, as if about to fall or lose control.

   ترنّح

   • He keeled over after drinking too much.
   • The boxer keeled from the punch.
   • She keeled sideways, clutching her head.

   المرادفاتlurchreelstaggerswaytotterwobble

   الأضدادbalancesteady

الصيغ المركّبةkeel over