perta:1. prejudice, damage, detrimento.2. forget, forgetfulness, loss.
I am surprised that the meaning does not make mention of the relationship that loss have with expert or expert, since loss is almost an archaism and however expert is a word that is used.
Perta- Galician & Portuguese, &#"Near&#", &#"close&#", ex., &#"de perta&#" = &#"from up close&#", &#"tao perta&#" = &#"so near&#".