Well... to be honest, back in the scene days we never used the term Chiptune (as far as I can remember).
I cannot remember it being used at scene parties either. I actually think the PC scene started the terminology when they switched from adlib music to sampled music. Before that happened I think music was just referred to as either modules or synthetic modules. C64 songs were just sids.
And even after that transition the name chiptune was only used for SoundTracker/NoiseTracker modules that used short samples instead of doing actual synthesis effects.
Anyway.... That's how I remember it.... A lot of time (alcohol) has passed since then.