Kindle does not yet allow you to set a default dictionary for Irish in the usual way.
Instructions on how to use this dictionary in pop-up mode are provided in the How do I use a Collins Kindle dictionary section.
If you have any issues with this, please contact dictionaries@harpercollins.co.uk
A handy and affordable one-way Kindle dictionary. It lets you look up the Irish translation of English words. To find out the English translation of Irish words you need to buy the Collins Gem Irish to English (One Way) Dictionary. Ideal for use on the go.
Compatibility & Functionality
(For technical help email: dictionaries@harpercollins.co.uk)
• Basic Text Search works on all Kindle devices
• Index lookup works on all Kindles except Kindle Fire and Kindle Fire HD
• Search across the full English to Irish dictionary by headword.
• Show Irish translations in a pop-up window when reading English books.