Plural of fir; evergreen trees with flat needle-like leaves and upright cones, commonly used as Christmas trees.
From Old English 'furh,' possibly related to Old Norse 'fura.' The tree name is ancient and appears in Germanic languages.
Douglas firs aren't actually firs—they're pseudotsuga—yet people call them firs anyway, showing how common names in nature often mislead even experts who created the scientific names.
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