
1) An old rope product 2) Boat-seam sealer 3) Calking fiber 4) Caulk on a wooden ship 5) Caulking fiber 6) Caulking material 7) Caulking stuff 8) Fiber 9) Fiber for caulking 10) Fiber from old rope 11) Fiber used for calking 12) Fibre 13) Fibre from old rope 14) Hemp fiber used in caulking 15) Hemp product
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https://www.crosswordclues.com/clue/oakum

The remains of old ropes that have become untwisted or picked to pieces, sometimes called tow. This material was often used to stuff into cracks in the ship
Found on
http://black-bart.co.uk/html/pirate_glossary.html

loosely twisted hemp fibers, impregnated with tar, used in rope. Picking oakum apart was common busywork in the prison or workhouse. The separated oakum was then used to caulk ships. Oliver picked oakum at the workhouse in Oliver Twist.
Found on
http://charlesdickenspage.com/glossary.html

Material used for caulking hulls. Often hemp picked from old untwisted ropes.
Found on
http://en.wikipedia.org/wiki/Glossary_of_nautical_terms

Material used for caulking hulls. Often hemp picked from old untwisted ropes.
Found on
http://en.wikipedia.org/wiki/Glossary_of_nautical_terms

Oakum is a preparation of tarred fibre used in shipbuilding for caulking or packing the joints of timbers in wooden vessels and the deck planking of iron and steel ships, as well as cast iron pipe plumbing applications. Oakum was at one time recycled from old tarry ropes and cordage, which were painstakingly unravelled and taken apart into fibre. ...
Found on
http://en.wikipedia.org/wiki/Oakum

old ropes untwisted for caulking the seams of ships
Found on
http://phrontistery.info/nautical.html

old ropes untwisted for caulking the seams of ships
Found on
http://phrontistery.info/o.html

• (n.) The material obtained by untwisting and picking into loose fiber old hemp ropes; -- used for calking the seams of ships, stopping leaks, etc. • (n.) The coarse portion separated from flax or hemp in nackling.
Found on
http://thinkexist.com/dictionary/meaning/oakum/

Loose hemp or jute fiber that is impregnated with tar or pitch and used to caulk large seams or for packing plumbing pipe joints.
Found on
http://www.encyclo.co.uk/local/20933
Oak'um noun [ Anglo-Saxon
ācumba ; prefix ... (cf.G.
er- , Goth.
us- , orig. meaning, out) +
cemban to comb,
camb comb. See
Comb .]
1. The material obtained by untwisting and picking into loose fiber old hemp ropes; -- used for calking the seam...
Found on
http://www.encyclo.co.uk/webster/O/1

- Loose hemp or jute fiber that's impregnated with tar or pitch and used to caulk large seams or for packing plumbing pipe joints
Found on
http://www.homebuildingmanual.com/Glossary.htm

Oakum is a loose fibre obtained by unravelling old rope. It is used especially for caulking seams in wooden ships. Unravelling old ropes, a practice known as picking oakum, was a common employment in 19th century workhouses and prisons.
Found on
http://www.probertencyclopaedia.com/browse/RO.HTM

[
n] - loose hemp or jute fiber obtained by unravelling old ropes
Found on
http://www.webdictionary.co.uk/definition.php?query=oakum
noun loose hemp or jute fiber obtained by unravelling old ropes; when impregnated with tar it was used to caulk seams and pack joints in wooden ships
Found on
https://www.encyclo.co.uk/local/20974

Loose hemp or jute fiber that's impregnated with tar or pitch and used to caulk large seams or for p
Found on
https://www.encyclo.co.uk/local/22400

Loose hemp or jute fiber that's impregnated with tar or pitch and used to caulk large seams or for packing plumbing pipe joints
Found on
https://www.homebuildingmanual.com/Glossary.htm
No exact match found.