barbules

"The bird used its delicate feathers to steer through the air. "

"The bird ruffled its feathers to stay warm on the cold morning. "

"The face of the cliff had many projections that were big enough for birds to nest on."

"You can create the color orange by mixing yellow and red."

"a continuous current of electricity"

"The smooth surface of the kitchen table was perfect for setting the dinner plates. "

"The seamstress preened the embellishments to the bodice of the gown. "

"He listened carefully to his mother's concerns, feeling sorrowful about her disappointment. "

"The bird's secondary feathers are essential for its flight. "

"The puzzle pieces interlocking perfectly showed a beautiful picture. "

"We supply all microscopic stains and other materials."

"The washing machine has an interlock that prevents the door from being opened while the drum is spinning. "