Where does “agurke” come from?

agurke (Low German) comes from Greek αγγούρι, from Byzantine Greek ἀγγούριν — cucumber.

Ancestry of “agurke”, step by step

Step	Language	Word	Meaning
1	Greek	αγγούρι	cucumber; stinker; twerp, nerd
2	Byzantine Greek	ἀγγούριν	cucumber