Group, from the Italian gruppo, further etymology here.
Java "Words what?" phile
I've been trying to search for the origin of the term "grouphead" or "group head".
It's easy to find out that E61 was named after the Eclipse of the year 1961 - The year Faema released its now classic thermal stability-delivering group head.
But why is it called GROUP HEAD?
Toys! I must have new toys!!!
And someone’s gonna ask, so here it is:
Portafilter comes from “portare” to carry, “filtro” filter
Literally filter carrier
To confuse things, my family in Italy calls the portafilter a group handle and because of that so do I.