- aspersorium
- aftercoming head
- algorithmic program
- algorithmic rule
- algorithm
- adaptometer
- an instruction
- amun ra
- amen
- amon
- a galley slave
- a microbe
- air conditioned
- air conduction
- air_conditioning
- air sifting
- acylcoenzme a
- a water_ carrier
- a deficit budget
- ampullipetal
- a spiritual guide
- air condition
- airconditioning
- air coditioning
- a pip (on a playing card)
- a craftsman
- a metereologist:
- a sculptor
- air washer
- aneroid
- aneroid barometer
- a make_up man
- a handbag
- a tune
- a turban
- a wrestler's trick to dash the opponent down through one's side
- a tailor's small bag for keeping his needle
- alaska
- a prolific writer (used sarcastically)
- a relative
- a switchboard
- a tiny boil
- a shilling (british currency)
- ark of the covenant
- a quiver
- anthropogentic
- a machineman
- an enameller
- a mason
- a meatus