loz ‧ enge /ˈlɒzəndʒ, ˈlɒzɪndʒ $ ˈlɑː-/ BrE AmE noun [countable]
[ Date: 1300-1400 ; Language: Old French ; Origin: losange ]
1 . a small flat sweet, especially one that contains medicine:
a cough lozenge
2 . a shape similar to a square, with two angles of less than 90° opposite each other and two angles of more than 90° opposite each other