Inf. a young child; a relatively young person. (Derogatory. Potentially offensive. Use only with discretion.) Some little snotnose swiped my wallet. A little snotnosed kid came in and asked for money.
snotnose(d) kid
and snotnose
n. a young child; a relatively young person. (Rude and derogatory.) Some little snotnose swiped my wallet.