colly¹ /kolˈi/

To begrime or darken, as with coal dust

1. Soot, smut (archaic or dialect)
2. (also colly bird) a blackbird (dialect)

• groundmen
• ground moraine
• groundnut
• groundnuts
• ground oak
• ground oaks
• ground-officer
• ground-officers
• ground-pigeon
• ground pine
• ground pines
• ground plan
• ground plans
• ground plate
• ground plates
• groundplot
• groundplots
• ground-position indicator
• ground provisions
• groundprox
• groundproxes
• ground rent
• ground rents
• ground-robin
• ground-robins