the young of a goat or related animal
= kidskin
informal a child or young person
(used before a noun) younger
my kid sister
with kid gloves
with great care or special consideration
kiddish adj
Middle English kide from Old Norse kith young goat. The use of kid to mean ‘child’ goes back at least to the 17th cent. Although probably originating in slang or cant, by the 19th cent. it was current among reputable users in informal contexts