noun, noun which may take the genitive case particle 'no'
fleeing hare; something unusually fast
Literary metaphor for extreme speed, almost always used in the set phrase 脱兎のごとく (like a fleeing hare). The literal meaning 'fleeing hare' is rare in modern standalone use.
See also: 脱兎のごとく (だっとのごとく)
彼は脱兎のごとく走り去った。
He ran away like a fleeing hare.
選手は脱兎の勢いでゴールに向かった。
The athlete dashed toward the goal with the speed of a fleeing hare.