Definition of teaspoonful in US English:

teaspoonful

noun

  • See teaspoon

    • ‘Mix one teaspoonful of this curry powder with the yoghurt and salt, and toss the lamb cutlets until lightly coated.’
    • ‘Drop dough by heaping teaspoonfuls onto ungreased cookie sheet, about an inch apart.’
    • ‘Drizzle on a teaspoonful of sesame oil if you're using it.’
    • ‘I love their piney, resinous, spicy smell, but you could add a teaspoonful of caraway seed - an old friend of the cabbage - instead.’
    • ‘Drop by heaping teaspoonfuls on ungreased baking sheet.’

Pronunciation

teaspoonful

/ˈtēˌspo͞onˌfo͝ol//ˈtiˌspunˌfʊl/