surmark
noun
sur·mark
variants or sirmark
ˈsərˌmärk
1
: a mark made on the molds of a ship when building to show where the frames should be beveled
2
: a cleat temporarily placed on the side of a ship on the ways or in a ship dock to support the ribband against which the shores rest
Word History
Etymology
surmark from sur- + mark; sirmark probably alteration (influenced by sir entry 1) of surmark