mitme spindli järjestikulise ridaasetusega puurpink avade järjestikuseks töötlemiseks (puurimine, hõõritsemine jms) toorikusse, a drilling machine consisting of several independent columns and spindles mounted on a common base and having a single worktable, so that a series of drilling and related operations can be accomplished in sequence by sliding the workpart along the worktable from one spindle to the next