A device to keep back tea leaves when pouring a cup of tea(noun)
WordNet. Princeton University. 2010.
Use "tea-strainer" in a sentence
"Recently I've been ordering Yerba Mate tea online in 1/2 and 1-kilo bags: I've got a Japanese-style tea-strainer (rather than the traditional yerba mate bombadillo (?)/straw-thing) and a coffee mug, and drink tea on and off throughout the day."
"You could use a tea-strainer to remove the bits of sage leaf."
"Strain milk mixture through a tea-strainer into a measuring cup, pressing the teabags with the back of a spoon."