There are many Jack-in-the-pulpits growing in the forest.

I love eating jack-fruits.

I saw a group of Jack Russells at the park.

There are many jack-backs in the garden.

The jacking gears are used to lift heavy machinery.

The Jack Puddings performed a hilarious comedy routine.

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.