[mer-gan-ser] 
) -ser. | any of several fish-eating diving ducks of the subfamily Merginae, having a narrow bill hooked at the tip and serrated at the edges. |
| mer·gan·ser (mər-gān'sər) n. Any of various fish-eating diving ducks of the genus Mergus or related genera, having a slim hooked bill. Also called sheldrake. [New Latin : Latin mergus, diver (from mergere, to plunge) + Latin ānser, goose; see ghans- in Indo-European roots.] |