furrowest

Verb

furrow (third-person singular simple present furrows, present participle furrowing, simple past and past participle furrowed)

1. (transitive) To cut one or more grooves in (the ground, etc.).
   • Cart wheels can furrow roads.
2. (transitive) To wrinkle.
3. (transitive) To pull one's brows or eyebrows together due to concentration, worry, etc.
   • As she pored over the company's bewildering tax documents, she furrowed her brows, wrinkled her nose, and began to frown her befuddlement.

   Synonyms:

   frown

4. (intransitive) to become furrowed
   • If you were bold enough to ask Antonin Scalia questions, you had to be precise. Otherwise the bushy black brows would furrow, the chin would crumple and the pudgy, puckish body would start to rock, eager to get at you.2016 February 20, “Obituary: Antonin Scalia: Always Right”, in The Economist

See all 7 meanings of furrow