A
Name: Ailm - pine tree(?) [wailing]
Color: alad - piebald [spotted, usually black and white]
Tree: fir, pine(?)
Bird: aidhircleóg - lapwing
MM: ardam íachta: loudest of groanings, loudest of groans
MO: tosach frecrai: beginning of an answer
CC: tosach garmae: beginning of expressions, beginning of calling
Deities: Macha the Mother of Twins, Danu as Great Mother
Meanings: birth and death, pregnancy, child(ren), cycle of life, origination, inception, conception, creation, initial understanding, an "ah-ha" experience

Notes: The word ailm is attested only once in the literature, and appears to mean "pine tree," but this is entirely conjectural. I assigned "wailing" to this letter based on the word ogams, which point to the groans of birth and death pangs, and to the "ah" of understanding when one begins to apprehend or express an answer to a deep question. In the Amra Choluim Chille, the letter a is glossed with "between his two a's, i.e. the a of his birth and the a of his death," regarding the "ah" cry of the newborn and the dying.