A small child; an infant.
"The tiny baby reached out his chubby hands to grab my finger."
"She found a tiny in the garden that looked no bigger than a grain of sand."
very small
"diminutive in stature"
"a lilliputian chest of drawers"
"her petite figure"
"tiny feet"
"the flyspeck nation of Bahrain moved toward democracy"
Very small.
"The tiny ant struggled to carry a crumb of bread that looked huge to us."
In plain English: Tiny means extremely small, almost too little to see clearly.
"The tiny ant crawled up the side of the glass jar."
The word tiny comes from Middle English tine, which meant very small, combined with the suffix -y. It likely originated directly from this older form to describe something of minute size.