(biochemistry) A dehydrogenated peptide in which the -CO-NH-CHR-CO₂- groups are replaced by -CO-N=CR-CO₂-

Relating to hectography.

A half-round file or rasp (being a flat file on one side, and a round file on the other); typically having coarse teeth. / A file of intermediate cut, neither very coarse nor very fine.

(transitive) To house or board a dog (or less commonly another animal). / (intransitive) To lie or lodge; to dwell, as a dog or a fox. / (transitive) To drive (a fox) to covert in its hole.