Of stocks of companies with a market capitalization of less than one billion dollars(adjective)
WordNet. Princeton University. 2010.
Use "small-cap" in a sentence
"The surge in the so-called small-cap stocks - companies whose total share value is $3 billion or less - indicates that investors' appetite for risk is growing as signs of recovery persist in the United States and euro zone leaders make progress in containing the debt crisis, market participants say."
"The buying interest in large-cap stocks also spilled over into mid-cap and small-cap shares."
"The mid-cap index gained 0.9% while the small-cap index ended 0.7% higher."