Green’s Dictionary of Slang

-head sfx

1. [16C+] used in a variety of combs. in which -head is linked to a n. to create a term with a neg. personal meaning, often fool or idiot; the implication is that the head in question is shaped like or otherwise resembles the n.; also less frequently used with adj., e.g. airhead n. (1); blockhead n.1 ; bonehead n.1 (1); cabbage-head n. (1); dickhead n.; egghead n.1 ; meathead n.; pinhead n. (2); pointy-head n. (1); shithead n. (1)

2. [mid-19C+] (US) used in a variety of derog. combs. to mean a person of a specific (and alien) ethnic origin, e.g. handkerchief-head n.2 ; pope-head under pope n.; rag-head n.

3. [1910s+] used in var. combs. to mean a fan or devotee of a particular thing, e.g. a certain type of music, e.g. chiphead n.; hog-head under hog n.; metalhead n.; petrol-head n.

4. [1920s+] used in var. combs. meaning a habitual user of a drug or a particular drink, e.g. a-head n.; hophead n.1 ; jickhead n.; pothead n.2