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A slap delivered with intent, ranging from punishment to playtime depending entirely on context.
means To strike someone, usually on the buttocks, with an open hand — as discipline, affection, or otherwise.
from Likely imitative, born around the 1720s — the word itself sounds like the smack it describes, an echo turned into English.
Spanking newMeans brand-new, possibly from a freshly slapped newborn.
Sound originIt is onomatopoeia: spelled to mimic the smack.
SpankerAlso a real sail on old square-rigged ships.