Definitions

1. noun

A road surface made of small stones or crushed gravel, often used as a filling or surfacing for roads.

“The construction crew used macadam to resurface the damaged road.”

2. proper noun

A Scottish family name, also the surname of John Loudon MacAdam, a Scottish engineer and road builder.

“John MacAdam is credited with improving road surfaces in the early 19th century.”

3. verb

To resurface or repair a road using macadam.

“The road was macadamized to improve its condition.”