rowlock

[ roh-lok; for 3 also Nautical rol-uh k, ruhl- ]
/ ˈroʊˌlɒk; for 3 also Nautical ˈrɒl ək, ˈrʌl- /
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noun

Architecture. one of several concentric rings of masonry forming an arch.
a brick laid on edge, especially as a header.Compare soldier(def 7).
Chiefly British. oarlock.
Also rollock (for defs 1, 2).

Origin of rowlock

1740–50; variant of oarlock; see row2
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

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British Dictionary definitions for rowlock

rowlock

/ (ˈrɒlək) /

noun

a swivelling device attached to the gunwale of a boat that holds an oar in place and acts as a fulcrum during rowingUsual US and Canadian word: oarlock
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012