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caulker

[kaw-ker] /ˈkɔ kər/
noun
1.
a person who caulks the seams of boats or the like.
2.
a caulking tool or device.
Also, calker.
Origin
1485-1495
1485-95; caulk + -er1
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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