My local all-things-Irish connection, Galway Traders (http://www.galwaytraders.com/), came through for me and I now finally have de Bhaldraithe's English-Irish dictionary.

I was surprised to discover that the Irish translations of verbs are rendered usually in the first person singular rather than by their command-form, as is the case in Ó Dónaill's Foclóir Gaeilge-Bearla.

There are three ways of referring to Irish verbs. There is no infinitive, so you cannot use the infinitive. You can call the verb:

1. by the imperative: Glan
2. by the present 1st psn: Glanaim
3 by the verbal noun: Glanadh

As long as you are consistent it doesn't really make any difference.