rowlock

[roh-lok; for 3 also Nautical rol-uh k, ruhl-] /ˈroʊˌlɒk; for 3 also Nautical ˈrɒl ək, ˈrʌl-/
noun
1.
Architecture. one of several concentric rings of masonry forming an arch.
2.
a brick laid on edge, especially as a header.
Compare soldier (def 7).
3.
Chiefly British, oarlock.
Also, rollock (for defs 1, 2).
Origin
1740-50; variant of oarlock; see row2
Examples from the web for rowlock
  • The hip roof is covered with asphalt shingle and has a deeply molded wooden cornice over one course of rowlock.
  • Another course of brick in rowlock defines a water table.
  • Three courses of rowlock brick are between the blocks and the stylized keystone.
  • The wall plane itself is developed as a frame for the limestone panels, made of courses of rowlock brick.
  • All openings are defined by a double course of rowlock, segmental arched, header brick.
  • All of the windows have six-over-six sash with unadorned openings and rowlock heads.
  • Header courses occur every sixth course and the fenestration is highlighted further by a singular rowlock course.
British Dictionary definitions for rowlock

rowlock

/ˈrɒlək/
noun
1.
a swivelling device attached to the gunwale of a boat that holds an oar in place and acts as a fulcrum during rowing Usual US and Canadian word oarlock