därän - name of a parasite worm (found in the sheep's head)
(Jastrow 324)
Hbr. pB. and Jud. (one of them most probably borrowed from the other)
are likely related, with a meaning shift ‘skin disease’ > ‘insect causing skin disease /
damage’.
Hebrew
dərōr - a kind of bird (swallow, dove)
(HALOT 230)
pB. ṣippor dərōr ‘a free bird living in the house as well as in the field’ (Jastrow 322)