bur (of a chestnut, etc.); burronly applies to イガイガ and いがいがsee also 毬【いが】
Generated: This refers to the spiky outer shell of certain seeds or nuts, particularly chestnuts, that can be difficult to handle due to its prickly nature.
Removing the spiky outer shell of the chestnuts was difficult.
adverb (fukushi); adverb taking the 'to' particle
irritating (e.g. one's throat); thorny; bristlingonly applies to イガイガ and いがいが
Generated: Used metaphorically, this meaning describes sensations or situations that are irritating or uncomfortable, such as a scratchy throat or an argumentative situation.