Rouge \Rouge\, n. [F.]

1. (Chem.) A red amorphous powder consisting of ferric oxide. It is used in polishing glass, metal, or gems, and as a cosmetic, etc. Called also crocus, jeweler's rouge, etc. [1913 Webster]

2. A cosmetic used for giving a red color to the cheeks or lips. The best is prepared from the dried flowers of the safflower, but it is often made from carmine. --Ure. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

Crocus \Cro"cus\ (kr[=o]"k[u^]s), n. [L., saffron, fr. Gr. kro`kos; cf. Heb. kark[=o]m, Ar. kurkum, Skr. ku[.n]kuma.]

1. (Bot.) A genus of iridaceous plants, with pretty blossoms rising separately from the bulb or corm. Crocus vernus is one of the earliest of spring-blooming flowers; Crocus sativus produces the saffron, and blossoms in the autumn. [1913 Webster]

2. (Chem.) A deep yellow powder; the oxide of some metal calcined to a red or deep yellow color; esp., the oxide of iron (Crocus of Mars or colcothar) thus produced from salts of iron, and used as a polishing powder. [1913 Webster]

Crocus of Venus (Old Chem.), oxide of copper. [1913 Webster]

Source: The Collaborative International Dictionary of English v.0.48
 

crocus

Source: WordNet (r) 2.0
 

Rouge \Rouge\, n. [F.]

1. (Chem.) A red amorphous powder consisting of ferric oxide. It is used in polishing glass, metal, or gems, and as a cosmetic, etc. Called also crocus, jeweler's rouge, etc.

2. A cosmetic used for giving a red color to the cheeks or lips. The best is prepared from the dried flowers of the safflower, but it is often made from carmine. --Ure.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Crocus \Cro"cus\ (kr[=o]"k[u^]s), n. [L., saffron, fr. Gr. kro`kos; cf. Heb. kark[=o]m, Ar. kurkum, Skr. ku[.n]kuma.]

1. (Bot.) A genus of iridaceous plants, with pretty blossoms rising separately from the bulb or corm. C. vernus is one of the earliest of spring-blooming flowers; C. sativus produces the saffron, and blossoms in the autumn.

2. (Chem.) A deep yellow powder; the oxide of some metal calcined to a red or deep yellow color; esp., the oxide of iron (Crocus of Mars or colcothar) thus produced from salts of iron, and used as a polishing powder.

Crocus of Venus (Old Chem.), oxide of copper.

Source: Webster's Revised Unabridged Dictionary (1913)