andvaka
nafnorðkvenkynand-vaka
u, f. sleeplessness, ἀγρυπνία, caused by care or grief, Fms. i. 82; mostly used in pl.
β. medic. agrypnia, Fél. ix. 189, Bs. i. 251.
γ. wakefulness, Hom. 108. In the Máfhlíð. vísur, Eb. ch. 19, andvaka unda = a sword, the ‘awakener’ of wounds; (cp. vekja blóð.)