Alternative form of Hel (Norse goddess)

A ring- or donut-shaped area or structure. / (geometry) The region in a plane between two concentric circles of different radii.

A statistician who uses factor analysis.

A domesticated dove with unclear taxonomic classification, often treated as its own species as Streptopelia risoria, sometimes as a subspecies of either Eurasian collared dove, Streptopelia decaoct...