Small scales from animal skins or hair or bird feathers that can cause allergic reactions in some people.

Roget 900: resentment, displeasure, animosity, anger, wrath, indignation; exasperation, bitter resentment, wrathful indignation.    pique, umbrage, huff, miff, soreness, dudgeon, acerbity, virulence, bitterness, acrimony, asperity, spleen, gall; heart-burning, heart-swelling; rankling.    ill humor, bad humor, ill temper, bad temper; irascibility etc. 901; ill blood etc. (hate) 898; revenge etc. 919.    excitement, irritation; warmth, bile, choler, ire, fume, pucker, dander, ferment, ebullition; towering passion, acharnement [Fr.], angry mood, taking, pet, tiff, passion, fit, tantrums.    burst, explosion, paroxysm, storm, rage, fury, desperation; violence etc. 173; fire and fury; vials of wrath; gnashing of teeth, hot blood, high words.    scowl etc. 895; sulks etc. 901.1. [Cause of umbrage] affront, provocation, offense; indignity etc. (insult) 929; grudge, crow to pluck, bone to pick, sore subject, casus belli [Lat.]; ill turn, outrage.    Furies, Eumenides.    buffet, slap in the face, box on the ear, rap on the knuckles.    ... show more

A feeling of anger and animosity:
— Having one's hackles or dander up.

synonym: hackles.

Dutch: nekhaar