teaspoonful

[tee-spoon-foo l]

noun, plural tea·spoon·fuls.

the amount a teaspoon can hold.
a volumetric measure equal to 1/6 fluid ounce (4.9 ml); 1/3 tablespoonful. Abbreviation: t., tsp.

Origin of teaspoonful

First recorded in 1725–35; teaspoon + -ful

Related formshalf-tea·spoon·ful, adjective, noun

See -ful.

If you cannot get a sweet wine add half a teaspoonful of sugar.
The Cook's Decameron: A Study in Taste:
Mrs. W. G. Waters
Put into it a teaspoonful of the melted fat, and let it run well over the pan.
The Skilful Cook
Mary Harrison
Measure a teaspoonful of tea for each person, and one teaspoonful over.
The Skilful Cook
Mary Harrison
Put to the clear gravy the juice of a Seville orange, half a teaspoonful of salt, the same of pepper, and a glass of red wine.
The Cook and Housekeeper's Complete and Universal Dictionary; Including a System of Modern Cookery, in all Its Various Branches,
Mary Eaton
I was kind of curious to see what 'twas like, so I took a teaspoonful.
Keziah Coffin
Joseph C. Lincoln