Sharp-witted, perceptive.
Having down, covered with a soft fuzzy coating as of small feathers or hair.
Low-spirited; down in the mouth.
A blanket filled with down; a duvet.
Very, super, etc.; usually relating to a qualitative value (as opposed to quantitative).
Causing or relating to increased speed.
With rapidly-increasing blind levels.
To autofire.
a turbine
A turban shell.
Autofire.