Aipple - Apple.

Air - Ere, early, soon.

Airm - Arm.

Aislar - Ashlar, square-hewn stone.

Ait, yit - Oat.

Aither, ether, edder - Either.  "It's aither wan or the aither." "It's either one or the other."

Aiver, aver - A workhorse, carthorse, an old horse.

Aiverie, yivvery - Anxious for, wanting, hungry.

Aizle, eizel - An ember, a spark, a burnt-out cinder. 

Alain, aleen - Alone.

Alang - Along. "They sauntered alang the banks o' the river."  "They sauntered along the banks of the river."

Ale, eel - Ale, lemonade, ginger beer etc.

Alicreesh - Liquorice.

Alow - On fire, ablaze.

Alun - An arctic skua.

Allan-hawk - The name given to several sea birds.

Amaist, a'maist - Almost.  "He a'maist kicked the fitba' into the net." "He almost kicked the football into the net."

Amang - Among, into the midst of, amid. 

Aneath, aneth - Beneath.  "It's aneath the blanket."  "It's underneath the blanket."

Angleberry, ingleberry - A fleshy growth on horses, cattle or sheep.

Aquevitae - Whisky, spirits.  Whisky translates as water of life.

Argie - To argue.  An argie-bargie is an argument or quarrel.

Ark - A chest, especially one for storing grain.

Arnit, arnut - An edible plant root, earth-nut.

Ashypet - A scullery maid.

Aside - Beside.  "I wis right aside him when he won."  "I was right beside him when he won."

Ask, esk - A newt, eft.