a waterbird with a broad blunt bill, short legs, and a waddling gait
noun
Examples:
• The children threw breadcrumbs to the ducks on the pond.
• A mallard duck landed gracefully on the surface of the lake.
to lower the head or body quickly to avoid something
verb
Examples:
• He ducked just in time to avoid the low-flying ball.
• She ducked behind the wall when she heard the loud noise.