lozenge

loz|enge /l'ɒzɪndʒ/ (lozenges)
1 [N-COUNT]
Lozenges are sweets which you can suck to make a cough or sore throat better.
...throat lozenges.
2 [N-COUNT]
A lozenge is a shape with four corners. The two corners that point up and down are further away than the two pointing sideways.
= diamond