Where does “pass” come from?

pass (German) comes from French passeport, from French port, from French porter, from English porter, from Middle English porter, from Old French portour, from Old French porter, from Old French -ment — Creates action nouns or result nouns from verbs.

Ancestry of “pass”, step by step

Step	Language	Word	Meaning
1	French	passeport	passport
2	French	port	port, harbour; port, harbour city; refuge
3	French	porter	to carry; to support, to bear; to wear
4	English	porter	A person who carries luggage and related objects;...
5	Middle English	porter	—
6	Old French	portour	carrier; bearer
7	Old French	porter	to carry; to carry a child
8	Old French	-ment	Used to form adverbs, most of the time equivalent...
9	Latin	-mentum	instrument, medium, or result of; e.g....
10	Latin	-menta	nominative plural of -mentum; accusative plural...
11	Proto-Indo-European	-mn̥	Creates action nouns or result nouns from verbs

Every word from Proto-Indo-European -mn̥ →