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Etymology · Proto-Indo-European

*bʰewg-

2 English words descend from Proto-Indo-European *bʰewg-, most common first.

functionWhat something does or is used for.
phugoidOf the motion of an aircraft, missile, or other flying object: continuously oscillating in a vertical plane due to the object pitching up and climbing, thus slowing down; then pitching down and descending, thus speeding up.