| COS | (anatomy) having ribs |
|---|---|
| COS | (of the surface of shells) having a rough, rib-like texture |
| COS | a hawker of fruit and vegetables from a barrow |
| COS | a flagellate that is the cause of the frequently fatal fish disease costiasis |
| COS | a flagellate that is the cause of the frequently fatal fish disease costiasis |
| COS | a fatal disease of fresh-water fish caused by a flagellated protozoan invading the skin |
| COS | (British) cost accounting |
| COS | retarding evacuation of feces |
| COS | costing nothing |
| COS | the quality possessed by something with a great price or value |
| COS | having a high price |
| COS | entailing great loss or sacrifice |