| OC | a legal holiday commemorating the discovery of America by Christopher Columbus |
|---|---|
| OC | a day for celebrating the founding of the United Nations |
| OC | the coup d'etat by the Bolsheviks under Lenin in November 1917 that led to a period of civil war which ended in victory for the Bolsheviks in 1922 |
| OC | someone whose age is in the eighties |
| OC | being from 80 to 89 years old |
| OC | the cardinal number that is the sum of seven and one |
| OC | eight-armed cephalopod lacking an internal shell |
| OC | octopuses and paper nautilus |
| OC | a family of Octopoda |
| OC | bottom-living cephalopod having a soft oval body with eight long tentacles |
| OC | tentacles of octopus prepared as food |
| OC | an offspring of a Quadroon and a White parent |