Superlative form of branchy; having the most branches or the highest degree of branching.
From branchy (adjective) + -est (superlative suffix), describing the maximum degree of branchiness. The most branched or bushy version of something.
Old grapevines develop the branchiest, most twisted structures after decades of pruning—some become so gnarled they look like sculpture, and a single vine can weigh hundreds of pounds.
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