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Webster 1913 Edition

Noun.

A dibble.

Halliwell.

dibber ‎(plural dibbers)

A tool with a handle on one end and a point on the other, used in the garden to poke holes in preparation for planting seeds, bulbs, etc. Also known as a dibble or dib.
- 1850, The Journal of the Horticultural Society of London
  In dry weather, when plants are drawn out of the seed bed, and planted with a common dibber, receiving daily dribblings of water, many will perish, and all are materially injured.
One who dibs.

tool

one who dibs