Wiktionary
n. The clear, watery fluid that fills the front of the eye between the cornea and the crystalline lens.
WordNet
n. the limpid fluid within the eyeball between the cornea and the lens [syn: aqueous humor]
Wikipedia
The aqueous humour is a transparent, watery fluid similar to plasma, but containing low protein concentrations. It is secreted from the ciliary epithelium, a structure supporting the lens. It fills both the anterior and the posterior chambers of the eye, and is not to be confused with the vitreous humour, which is located in the space between the lens and the retina, also known as the posterior cavity or vitreous chamber.
Usage examples of "aqueous humour".
The moon is up already, a moon the colour of candlewax and, as the sky discolours when the night conies on, the moon grows more white, more cold, white as the source of all the cold in the world, until, when the winter moon reaches its chill meridian, everything will freeze -- not only the water in the jug and the ink in the well, but the blood in the vein, the aqueous humour.