1. a hole dug in the ground to hold a fence post or similar upright structure

Examples

• The farmer dug postholes every eight feet along the property line.
• We used a posthole digger to make the job easier.
• Each posthole needs to be at least two feet deep.
• The workers filled the postholes with concrete around the fence posts.
• Rain had filled the empty postholes with muddy water.
• The posthole was perfectly round and smooth-sided.