• Webster's Revised Unabridged Dictionary
    • n Dogshore (Naut) One of several shores used to hold a ship firmly and prevent her moving while the blocks are knocked away before launching.
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Century Dictionary and Cyclopedia
    • n dogshore In ship-building, one of the shores or pieces of timber used to prevent a vessel from starting during the removal of the keel-blocks preparatory to launching.
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In literature:

Later on in the morning the brakes of the drums were tightened down, and the dogshores were removed from the ways in front of the cradles.
"The life of Isambard Kingdom Brunel, Civil Engineer" by Isambard Brunel