(medicine) A disease caused by the West Nile virus that is transmitted from birds to mosquitoes and then to people. Symptoms include drowsiness, headache and nausea, pain in the abdomen, a rash, and swollen glands, and may prove fatal.

A particular flavivirus that causes West Nile fever, dangerous to humans.

A region of South Sudan

(pharmacology) A prostaglandin analogue.

(rare, possibly dated) Nilotic; from, residing or located by, or pertaining to the river Nile.

(pharmacology) A synthetic steroidal estrogen, the 3-cyclopentyl ether of 17α-ethinyl estriol.