(in plumbing) a barrier for retaining molten solder within a certain area until it has cooled.
What’s The #’s Real Name?A hash has referred to stripes on military jackets since as early as 1910. But, in the 1980s, people started using hash to refer to the # symbol.
Origin of tinker's dam
First recorded in 1875–80
Definition for tinker's dam (2 of 2)
or tinker's dam
the least value or merit; nothing or anything at all: It's not worth a tinker's damn.
Origin of tinker's damn
First recorded in 1830–40; from tinkers' alleged habit of cursing frequently (hence weakening the force of a curse)
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
British Dictionary definitions for tinker's dam
slang the slightest heed (esp in the phrase not give a tinker's damn or cuss)
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