Obsolete. to keep back or withhold, as from a person.
Origin: 1480–90;detainen < Anglo-French,Old Frenchdetenir < Vulgar Latin*dētenīre, for Latindētinēre, equivalent to dē-de- + -tinēre, combining form of tenēre to hold
mid-15c., from M.Fr. detenir, from O.Fr. detenir "to hold off, keep back" (12c.), from L. detinere "hold off, keep back," from de- "from, away" + tenere "to hold" (see tenet). Related: Detainee (1928).