Where does “հաստագլուխ” come from?

հաստագլուխ (Armenian) comes from Armenian գլուխ, from Old Armenian գլուխ — head; extremity; summit, top; end or beginning;...

հաստագլուխ (Armenian): having a thick head; thickheaded, dull, stupid

Definitions

հաստագլուխ traces back through two separate lines of ancestry.

Step	Language	Word	Meaning
1	Armenian	գլուխ	head; top, head of something; top, summit
2	Old Armenian	գլուխ	head; extremity; summit, top; end or beginning;...

Step	Language	Word	Meaning
1	Armenian	հաստ	thick, dense, broad
2	Old Armenian	հաստ	firm, steady, standing still, tough; thick,...