a migratory passerine bird in the swallow family.

The largest North American swallow, Progne subis.

Petrochelidon ariel, an Australian bird of the swallow family.

Fragile X syndrome.

(computing theory) An algorithm for approximating the number of distinct elements in a stream with a single pass and logarithmic space consumption.

One of 64 parishes in Louisiana, United States, the equivalent of a county in other US states.. Parish seat: St. Martinville.

A period of warm weather in early November.

A kind of open-hearth process for producing steel.

Ptyonoprogne rupestris, a small passerine bird in the swallow family.

Synonym of Albright's hereditary osteodystrophy