A la carte real estate service: Transactions that are rendered one at a time instead of a commission-based, full service relationship.
A-frame design: A style of house incorporating a high, peaked roof. It has an open and airy interior, featuring open ceiling rafters.
A-valve: A manual gas shut-off valve.
Abacus: A thick square or rectangular plate of any size forming the top of a column.
Also, an oblong frame with rows of wires or grooves along which beads are slid to do calculating.
Abandon: Leaving something in a place, ...