Where does “dicht” come from?

dicht (German) comes from Middle High German dīchte, from Old High German dīhti, from Proto-West Germanic *þį̄ht(ī), from Proto-Germanic þinhtaz, from Proto-Indo-European tenkt-, from Proto-Indo-European ten- — to stretch, to extend.

dicht (German): thick, tight, dense; impermeable, sealed, shut,...