A pothead is a type of insulated electrical terminal used for transitioning between overhead line and underground high-voltage cable or for connecting overhead wiring to equipment like transformers. Its name comes from the process of potting or encapsulation of the conductors inside the terminal's insulating bushing.
One who angers easily or goes in search of arguments or fights.
"The club was full of eager young hotheads who never seemed to be able to agree on anything."
One who reacts quickly and without thinking carefully first
"Someone get this hothead out of here."
A person who smokes cannabis frequently, to excess.
"That pothead Shane has a nasty bong."
a belligerent grouch
a reckless impetuous irresponsible person
someone who smokes marijuana habitually