1. a flat-bottomed boat or barge, especially one used in shallow water
Usage: informal; chiefly nautical
2. a flat shoe with little or no heel
Usage: informal

Examples

• The fishermen used a flattie to navigate the shallow bayou.
• She preferred wearing flatties to heels for comfort during long workdays.
• The old flattie was perfect for transporting cargo down the river.
• Her collection of flatties included leather and canvas styles.
• The captain steered the flattie carefully through the narrow channel.