la ‧ cu ‧ na /ləˈkuːnə/ BrE AmE noun ( plural lacunae /-niː/ or lacunas ) [countable] formal
[ Date: 1600-1700 ; Language: Latin ; Origin: 'pool, hole in the ground, empty space' ]
a place where something is missing in a piece of writing SYN gap
la ‧ cu ‧ na /ləˈkuːnə/ BrE AmE noun ( plural lacunae /-niː/ or lacunas ) [countable] formal
[ Date: 1600-1700 ; Language: Latin ; Origin: 'pool, hole in the ground, empty space' ]
a place where something is missing in a piece of writing SYN gap
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012