semeion /sē-mīˈon/

1. (in ancient prosody) the unit of time
2. One of the two divisions of a foot
3. A mark of metrical or other division

• 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
• ground rule
• ground rules
• ground run
• ground runs
• grounds
• groundsel
• groundsell
• groundsels