libero
Concise Oxford English Dictionary © 2008 Oxford University Press:
libero /ˈliːbərəʊ/
▶noun (pl. liberos) Soccer another term for sweeper (sense 2).
– origin 1960s: from Ital., abbrev. of battitore libero ‘free defender’, lit. ‘free beater’.
'libero' also found in these Oxford entries:

