A sound or a combination of sounds, or its representation in writing or printing, that symbolizes and communicates a meaning and may consist of a single morpheme or of a combination of morphemes.
I could go all over the board with this one. Pus in the knee? A few that aren't fit to type here? The main problem I see with this word is it has an identity crisis. It's a British term but French spelling. I mean, who wouldn't be confused? I feel sorry for the puny little thing...and that's exactly how it's pronounced - puny.
The dictionary definition:
Lower in rank; junior.