1. a cushioned footstool or low seat
2. a thick clump or tuft of grass or sedge
Usage: chiefly British
3. a cushion used for kneeling in a church

Examples

• She rested her feet on the hassock while reading.
• The living room furniture included a sofa, two chairs, and a matching hassock.
• The marsh was dotted with hassocks of tall grass.
• He knelt on the hassock during the church service.
• The upholstered hassock doubled as extra seating for guests.
• Walkers had to step carefully over the wet hassocks in the bog.