A person who stands on a rock or eminence to observe shoals of herring, etc., and to give notice to the men in boats which way they pass.(noun)
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Use "balker" in a sentence
"Enjoying the short ride to Grasshopper Level, Leah was mindful of how this horse had been a balker back when Dat first bought him from Uncle Noah Brenneman."
""Which, while they're still fast friends, was the last word ever passed between them on the subject of the funker and the balker.""
"As the boy led her from the stable she came out with her ears laying back and her short tail switching; and I said to myself, "here will be a job breaking a kicker and balker.""