stifftail 
(also stiff-tailed duck)
noun
A diving duck with a stiff tail of pointed feathers, often held up at an angle.
- Family Anatidae: four genera, in particular Oxyura, and several species, e.g. the ruddy duck.
- Some of his books are technical surveys of groups such as owls, hummingbirds, and stifftail ducks.
- Modern authors accept that we are dealing with two species of stifftail in Europe.
- potentially
- potentially exempt transfer
- potentialness
- potential scattering
- potential temperature
- potential wall
- potential well
- potentiary
- potentiate
- potentiation
- potentiator
- potentilla
- potentiodynamic
- potentiometer
- potentiometric
- potentiometrically
- potentiometric titration
- potentiometry
- potentional
- potentiostat
- potentiostatic
- potentiostatically
- potentise
- potentite
- potentization