いろ

Etymology 1
/iro2/ →

From. First cited in ancient texts such as the  of 712.

Cognate with. Appears to be distinct from.

Prefix

 * 1) kinship through the same mother

Etymology 2
Reading of various kanji terms.

Noun

 * 1)  a waterway or other conduit for water to be used for drinking, agriculture, etc.
 * 2)  color
 * 3)  temporary housing in which an emperor resides during the period of mourning following the death of the emperor's father