lacuna
Concise Oxford English Dictionary © 2008 Oxford University Press:
lacuna /ləˈkjuːnə/
▶noun (pl. lacunae /-niː/ or lacunas)
- 1 a gap or missing portion.
- 2 Anatomy a cavity or depression, especially in bone.
– derivatives
lacunal adjective,
lacunar adjective,
lacunary adjective,
lacunate adjective,
lacunose adjective.
lacunal adjective,
lacunar adjective,
lacunary adjective,
lacunate adjective,
lacunose adjective.
– origin C17: from L., ‘pool’.
'lacuna' also found in these Oxford entries:

