n. 25B6; noun
a tabloid hack : JOURNALIST, reporter, newspaperman, newspaperwoman, writer, Grub Street writer; informal journo, scribbler, hackette; archaic penny-a-liner.
office hacks : DRUDGE, menial, menial worker, factotum; informal gofer; Brit. informal dogsbody, skivvy.
a riding-school hack : HORSE, pony; informal nag; N. Amer. informal plug; Austral./NZ informal moke.