In Scotch law. An action brought for the purpose of rescinding, annulling, or cancelling some bond, contract or other instrument in writing. 1 Forb. Inst pt. 4, pp. 158, 150. In French law. Abatement When a parent gives away, whether by gift inter vivos or by legacy, more than his portion dis- ponible, (q. v.) the donee or legatee is required to submit to have his gift reduced to the legal proportion.