(informal) abdominal muscle.

(slang) An abscess caused by injecting an illegal drug, usually heroin.

(US) The early stages of; the beginning process; the start.

(non-productive) From. / (non-productive) Away from; outside of.

(physics) A unit of electromagnetic charge in the centimeter-gram-second system: the abcoulomb.

(Judaism) Av.

A diminutive of the male given name Abner, from Hebrew, occasionally used as a formal given name.

(dated) In Egyptian belief, the heart and will and conscience of a person, especially that of the recently deceased which proceeds to the afterlife and is weighed as evidence during his or her judgement.

(immunology) Antibody.

antibody