By late summer the cotton plants began to boll, promising a good harvest.

After the storm, a solitary boll lay on the muddy field, its fluffy fibers beginning to unfurl.

Professor Boll published a groundbreaking study on climate patterns.

Bolle, a German surname, appears in many 19th-century census records across northern Germany.

The farmer carefully inspected the bolls to determine when the cotton was ready for harvest.

A weathered bolling at the edge of the field served as a nesting site for swallows.

At the antique fair, collectors argued passionately over the provenance of two rare bollings that had just come up for auction.

After the drought, only a few cotton plants bolled before the first frost.

Bolling sent a polite reply after the meeting.

Bolles gathered in the courtyard to celebrate the harvest.