Definition of clap something on in US English:

clap something on

phrasal verb

  • Abruptly impose a restrictive or punitive measure.

    ‘most countries clapped on tariffs to protect their farmers’
    • ‘Along busy streets, bright signs for Coke, Pepsi, Citibank, Bell South, Papa John's, KFC, Marriott - even Starbucks - could vanish if Peru chose to clap tariffs on those products.’
    fling, cast, put, place
    View synonyms