A vertical post, at the front of the keel, that forms the main part of the bow(noun)
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Use "stempost" in a sentence
"… What is unusual, though, is the notch at the tip of the stempost."
"When I murmured the words I have just written here, Os had nearly vanished; but I remained where I was, leaning on the rail of the little quarterdeck near the stempost, looking back along the upper river that lay gleaming to the north and east."
"Theor gripped the stempost and stared out at the enemy."