Wiktionary
pin-head
n. (alternative spelling of pinhead English)
Usage examples of "pin-head".
Red toadstools towered over my head, puff-balls dusted me with yellow spores, trumpetlike chanterelles dripped water from their cups, clusters of pin-head mushrooms glowed white like corpses.
The real fact of the matter is that many modern readers are pin-headed neurotics, who have not the staying power to read a great book at full length.
HOOKE produced some plano-convex spherical glasses, as small as pin-heads, to serve for object-glasses in microscopes.
Only a pin-head fool would hope to find the wild and woolly Big Sur of bygone days in the Florida torpor.