
1) Coin of Scotland
Found on
https://www.crosswordclues.com/clue/plack
[coin] A plack (plang) was an ancient Scottish coin of the value of four Scots pennies or by 1707 one third of an English penny. It appears in the old song: The word is probably derived from the ancient Flemish coin, a plaquette, current before the introduction into the Netherlands of the French money reckoned by francs and centimes. It can...
Found on
http://en.wikipedia.org/wiki/Plack_(coin)
[software] Plack is a set of tools for Perl programming of Web applications and running frameworks compatible with the PSGI specification, such as Catalyst and Dancer. Plack was inspired by Rack for Ruby and WSGI for Python. Plackup is a command-line tool for running the PSGI applications, ==Supported backends== ==Examples== Using the defau...
Found on
http://en.wikipedia.org/wiki/Plack_(software)

• (n.) A small copper coin formerly current in Scotland, worth less than a cent.
Found on
http://thinkexist.com/dictionary/meaning/plack/
Plack noun [ French
plaque a plate of metal. Confer
Plaque .] A small copper coin formerly current in Scotland, worth less than a cent. « With not a
plack in the pocket of the poet.»
Prof. Wilson. Found on
http://www.encyclo.co.uk/webster/P/98
No exact match found.