What's the difference between i.e. and e.g.?
type of clayey soil (much used in pigments), late 14c., from Old French ocre (c.1300) and directly from Late Latin ocra, from Latin ochra, from Greek ochra, from ochros "pale yellow," of unknown origin. As a color name, "brownish-yellow," it is attested from mid-15c. Related: Ochreous.