Etymology: Derived from the Japanese elements 'iku' (育) meaning 'to raise' or 'bring up', combined with 'ko' (子) meaning 'child'; however, in many cases, 'Iku' can also come from 結 'to bind, to connect' or 優 'gentleness, superiority', depending on kanji usage. Most commonly interpreted as 'pure child' when written with appropriate characters such as 郁子 or 生子, though meanings vary by kanji.