Illustrated Companion to the Latin Dictionary/Coactores

This article incorporates text from a publication now in the public domain: Rich, Anthony (1849). The illustrated companion to the Latin dictionary, and Greek lexicon. p. vi. OCLC 894670115. https://archive.org/details/illustratedcompa00rich. 

COACTO'RES (πράκτορες). Receivers or collectors of taxes, duties, &c. Cic. Rab. Post. 11. Hor. Sat. i. 6. 86.

2. The rear-guard of an army, or the body of troops who brought up the rear in a line of march. Tac. Hist. ii. 68.