What is another word for rowlock arch?
Pronunciation: [ɹˈə͡ʊlɒk ˈɑːt͡ʃ] (IPA) 
A rowlock arch is a structure that holds oars in place when rowing a boat. Synonyms for this term could include oarlock arch, rowing arch, or simply oarlock. Other terms might include thole pin, thole, or thole peg, which are alternative rowing components used in small boats. In larger vessels, the rowlock arch may be referred to as a gunwale, or the upper edge of the boat's side. Some boaters may also use the terms crab or crutch to refer to the rowlock arch. Regardless of the exact term used, rowlock arches are an essential element in any rowboat and are instrumental to the rowing experience.
