droop
n. US //ˈdɹup// UK //dɹˈuːp// droop
Inherited from Middle English droupen, from Old Norse drúpa (“to droop”), from Proto-Germanic drūpaną, drupōną (“to hang down, drip, drop”), from Proto-Indo-European *dʰrewb- (“to drip, drop”). Doublet of drip and drop.