ребёнок

Etymology
, diminutive of from. Compare with. The relationship with "slave" could arise from the meaning "orphan" because orphans carried out the hard work in the household.

Noun

 * 1)  child, kid, baby: children, kids, babies
 * 2)   guys, fellows, friends, comrades
 * 1)   guys, fellows, friends, comrades

Usage notes

 * The singular form can only refer to "child"/"baby" sense.
 * The plural form can mean "guys", "friends", etc.
 * For the plural form "children" is the preferred word but  is also used.
 * The suppletive plural form is originally a plural form of.