Dictionary.net

• A pocket handkerchief. “If you don't take fogles and tickers, if you don't take pocket hand kechers and watches, said the Dodger, reducing his conversation to the level of Oliver's capacity, some other cove will.”-Dickens.

1899 - The american dictionary of the english language.
By Daniel Lyons

• (thieves\' slang). Silk handkerchief.

1919 - The concise Oxford dictionary of current English
By Sir Augustus Henry