garboard n the first wale laid next to the keel of a wooden ship Usage(s) But if the French and Spanish navies were rotten to their garboard strakes, Pope makes clear that the British was rotten to its keelson. But anybody who can tell a top carling from a garboard strake will want a copy of Spring Tides in his dunnage the next time he does a windward dozen. Synonym(s) garboard plank garboard strake