däirn

Uncertain; possibly from Old Saxon *dēgian, from Proto-West Germanic *daijan, from Proto-Germanic *dajjaną (“to suck, to suckle”), from Proto-Indo-European *dʰeh₁(y)- (“to suckle, nurse”).

Compare Proto-Germanic *hnajjaną.

däirn (hapax legomenon)

1. (Westphalian) to suckle; to feed (a calf) with milk^[1]

• This term is attested solely in the cited reference, which itself gives no direct source. While its causative sense is reminiscent of *dajjaną, the form is etymologically irregular—the presence of r is unexplained and not consistent with regular developments from the presumed root. The term should therefore be treated with caution pending further evidence.