Dr. Rostafinski called the large open meshes of the net 'oka', eyes; lumina let us say! quite uniform they are in 9 and 10, much less so in 8.

The copper is so much per oka, the workmanship so much; every article is weighed by a sworn weigher and a ticket sent with it. 

We bought an oka of excellent cherries, which we were cruel enough to taste in the streets, before the hungry eyes of the suffering merchants.