Commentary: partition divider - a vertical structure that divides or separates
Suzy tripped and knocked over all the partitions like dominoes.
George had to stand on his desk to see over the partition.
WordNet 2.0 Sense Numbers: 1
Commentary: PARTITION[+event] division, partition, partitioning, segmentation, sectionalization, sectionalisation - the act of dividing or partitioning; separation by the creation of a boundary that divides or keeps apart
The partition of the office was done over the weekend.
The partition of the bedroom kept the roommates from fighting.
WordNet 2.0 Sense Numbers: 2
Commentary: the part of a hard disk that is dedicated to a particular operating system or application and accessed as a single unit
The other partition has the file you're looking for.
WordNet 2.0 Sense Numbers: 3