(n.) Connection; tie.

Indian file array articulation bank buzz catena catenation chain chain reaction chaining concatenation connection consecution continuum course cycle descent drone endless belt endless round file filiation gamut gradation hum knot ligament ligature line lineage link monotone pendulum periodicity plenum powder train progression queue range rank recurrence reticulation rotation round routine row run scale sequence series single file spectrum string succession swath thread tie tier train vinculum windrow yoke