1. elections held to choose a political party’s candidate for a general election
Usage: politics
2. the main flight feathers of a bird’s wing
Usage: ornithology
3. basic or fundamental things that are most important

Examples

• The Democratic primaries will be held next month.
• She won the Republican primaries by a large margin.
• The eagle’s primaries were damaged in the storm.
• Ornithologists study the length and shape of bird primaries.
• We need to focus on the primaries before moving to advanced topics.
• The company’s primaries include customer service and quality control.