In a fibrous manner; with qualities of or relating to fibers.
From fibrous + -ly (Old English -lice, in the manner of). This adverb allows description of how something exhibits fibrous properties.
Celery is structured fibrously—if you peel it apart, you can literally see the long fibers running lengthwise, which is exactly why eating it feels like you're chomping on nature's dental floss.
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