Gair i gall : geriadur sylfaenol i ddysgwyr : The ACEN dictionary for learners
ACEN Cyf. (1993)
This is a Welsh-English, English-Welsh dictionary, primarily for English speakers learning Welsh.
In addition the book gives information on punctuation, mutations, verb-stems, comparative and radical forms of adjectives.
There are sections on place-names, Christian names and numbers.
WEL DICO 1 Open access