1. heavy woolen coats or jackets, typically plaid, designed for cold weather
Usage: plural of mackinaw
2. flat-bottomed boats used on the Great Lakes
Usage: nautical; historical

Examples

• The lumberjacks wore their red plaid mackinaws to stay warm.
• Several mackinaws hung in the cabin’s entryway.
• He bought two new mackinaws before winter arrived.
• The store specialized in selling traditional mackinaws.
• Old mackinaws transported goods across the Great Lakes.
• The museum displayed several restored mackinaws from the 1800s.