
1) Holder 2) Oarlock 3) Thole 4) Tholepin 5) Water sports equipment
Found on
https://www.crosswordclues.com/clue/rowlock

1) Oarlock 2) Thole 3) Tholepin
Found on
https://www.crosswordclues.com/clue/rowlock

A rowlock k or oarlock (US) is a brace that attaches an oar to a boat. When a boat is rowed, the rowlock acts as a fulcrum, and, in doing so, the propulsive force that the rower exerts on the water with the oar is transferred to the boat by the thrust force exerted on the rowlock. On ordinary rowing craft, the rowlocks are attached to the gunwales...
Found on
http://en.wikipedia.org/wiki/Rowlock

contrivance serving as a fulcrum for an oar
Found on
http://phrontistery.info/nautical.html

contrivance serving as a fulcrum for an oar
Found on
http://phrontistery.info/r.html

U-shaped cutout in a boat's gunwale acting as a fulcrum for the oars. Thole pins, two wooden or metal pins in the gunwale, often replaced the rowlock. The modern U-shaped metal swivel is called a crutch, oarlock, or rowlock.
Found on
http://shipwrightjournal.blogspot.co.uk/p/glossary-of-nautical-terms.html

• (n.) A contrivance or arrangement serving as a fulcrum for an oar in rowing. It consists sometimes of a notch in the gunwale of a boat, sometimes of a pair of pins between which the oar rests on the edge of the gunwale, sometimes of a single pin passing through the oar, or of a metal fork or stirrup pivoted in the gunwale and suporting the o...
Found on
http://thinkexist.com/dictionary/meaning/rowlock/

A pivoting device for holding an oar in place when rowing.
Found on
http://www.diy-wood-boat.com/Boating-terms.html

A contrivance or arrangement serving as a fulcrum for an oar in rowing. It consists sometimes of a notch in the gunwale of a boat, sometimes of a pair of pins between which the oar rests on the edge of the gunwale, sometimes of a single pin passing through the oar, or of a metal fork or stirrup pivoted in the gunwale and suporting the oar. ... Orig...
Found on
http://www.encyclo.co.uk/local/20973

A brick laid on its face edge so that the normal bedding area is visible in the wall face. Frequently spelled rolok.
Found on
http://www.encyclo.co.uk/local/22187

A brick on edge showing it's end on the face of the wall. Also called a Rollock;
Found on
http://www.encyclo.co.uk/local/22188
Row'lock noun [ For
oarlock ; Anglo-Saxon »
rloc , where the second part is skin to German
loch a hole, English
lock a fastening. See
Oar , and
Lock .]
(Nautical) A contrivance or arrangement serving as a fulcrum for an oar in rowing. It consists...
Found on
http://www.encyclo.co.uk/webster/R/99

See OAR LOCKS and THOLE.
Found on
http://www.glen-l.com/resources/glossary.html

A brick laid on its face with the end surface visible in the wall face. Frequently spelled rolock.
Found on
http://www.selectstone.com/architectural-resources/stone-glossary/

a device which swivels on the end of the outrigger to support the oar
Found on
https://www.nswrowers.com/glossary.html
No exact match found.