Definition of pinhead in US English:



  • 1The flattened head of a pin.

    • ‘The same printer that publishes Bible verses on pinheads prints the radio frequencies on sectional charts.’
    1. 1.1often as modifier A very small rounded object.
      ‘pinhead dots’
      • ‘Synonymous with tench feeding are bubbles, what has been referred to as needle bubbles, which describes the tiny streams of pinhead bubbles perfectly.’
      • ‘He uses plastic garlands suspended in the lagoon to provide an anchorage for the drifting pinhead size larvae.’
      • ‘A grey-blue, very hard metal, it's the key element called a pinhead capacitor.’
      • ‘They go from pinhead size to the size of adult beetles in about two weeks.’
      • ‘A rash of pink-red spots the size of pinheads usually appears shortly after the glands swell.’
      • ‘In a metallic pot, this plant is a Seventies survivor; glowing yellow pinheads of flower appear in July on invisible stalks like fibre optics sprouting from a frothy mound of silver foliage.’
      • ‘Within two weeks the dots grew to the size of pinheads, and stayed that way for months.’
      • ‘But instead of buckyballs, they spice the mixture with nano-size semiconducting wires or pinheads called quantum dots.’
      • ‘As Jocelyn impressed her opponents with fury, a subtle speck of light the size of a pinhead formed in the center of the room.’
      • ‘Martinez tried to imagine the smaller than a pinhead probe shooting across the vast distance of the Dry-dock area towards the Banting.’
      • ‘Within the confines of any ‘feeding area’ there will be one extremely localised, pinhead spot that produces more takes than outside it.’
      • ‘He said that tiny cameras the size of pinheads were also often attached to cash machines, often hidden among badges and stickers on the machine.’
      • ‘Ticks begin their life cycle as tiny black creatures not much bigger than a pinhead that can attach themselves to warm-blooded creatures that brush against the heather or bracken in which they live.’
  • 2informal A stupid or foolish person.

    • ‘While I want this article to dispel the common stereotype that fanfiction is written by pinhead fangirls desperate to see their favourite characters get it on, it must be admitted that such beings exist in herds.’
    • ‘So a cross-eyed, buck-toothed pinhead look was the appearance that got you where you needed to be.’
    • ‘The only question about these two pinhead thieves is whether they were complete morons before or because of using drugs.’
    • ‘I am one of those sad little pinheads who think it's really one war, one foe, with a thousand fronts.’
    • ‘Fresh new pinheads in tuxes and cocktail dresses to look at in the society pages!’
    • ‘Despite presumptuous pinheads who think they have her character pegged down to a sexy little stereotype, it's her voice that draws attention.’
    • ‘All they saw was the hero O'Reilly standing to up to the overeducated, anti-religious, arrogant pinhead scientist.’
    • ‘A kind, loving, and caring man (as opposed to a pinhead playboy) is going to fall for your total being and not your dress size.’
    • ‘The new park benches rock, literally; they slide back and forth, and the illiterate pinheads haven't tagged them yet.’
    • ‘But this is what passes for an attempt at thinking among these pinheads.’
    • ‘The cell phone was never envisioned as an instrument of torture that garrulous pinheads could use to inflict pain on their fellow commuters, yet this is what it has become.’
    • ‘The film is currently banned by the sort of pinheads who think Huck Finn is a racist book and who get offended when people say ‘niggardly’.’
    • ‘That's something that you and your stupid newspaper would never do, you pinhead.’
    idiot, ass, halfwit, nincompoop, blockhead, buffoon, dunce, dolt, ignoramus, cretin, imbecile, dullard, moron, simpleton, clod
    View synonyms