My youngest son recently sent an email to his father in which he misspelled "son" as "sone", prompting the latter to look up "sone", find it appropriate, and add a second definition.
Pronunciation: \ˈsōn\ Function: noun.
Etymology: International Scientific Vocabulary, from Latin sonus sound.
1. Date: 1948 : a subjective unit of loudness for an average listener equal to the loudness of a 1000-hertz sound that has an intensity 40 decibels above the listener's own threshold of hearing.
2: A male child in relation to his parents, before he has learned the value of quiet.