The ship's jack-staffs were adorned with colorful flags.

The construction workers installed several jack arches in the building.

The carpenter installed the jack rafters on the roof.

The workers unloaded the jack timbers from the truck.

The Jack Ketches were known for their brutal executions.

I love eating jack fruits.

The construction workers used several jack blocks to support the heavy beams.

I found a bag full of jack-balls in the park.

The construction workers installed the jack trusses on the roof.

I have two jack planes in my workshop.