🇬🇧 Caulk meaning: English Vocabulary Flash Card

To caulk means to squeeze a thick, gooey paste into little gaps or cracks around things like bathtubs, windows, or sinks. Then you smooth it out so it dries and blocks water, air, bugs, and dirt from sneaking in. People caulk to keep houses warm, dry, and less leaky.

My aunt can caulk in such a straight line that I’m pretty sure even a ruler asks her for advice.

The more we tried to caulk the leaky corner, the more the corner laughed and dripped like, “Nice try, humans.”

Mom told me not to touch the fresh caulk, so of course my finger, my sleeve, and somehow my nose all went straight into it.

The instructions said, “Carefully caulk the seam,” which I translated as, “Make a huge mess and then search online how to fix it.”

People have been caulking boats and buildings for thousands of years—sailors once used tar and fibers to caulk ships so they wouldn’t sink.

Rain dripped through the old kitchen window. Sam warmed his hands, squeezed the tube, and began to caulk the cold gap. He caulked the frame, caulked the corners where paint had peeled, pressed the goo into the crack, caulked the sill. Night calm settled; the drip stopped and he smiled before tea, promising to caulk the porch tomorrow.

This word is at the C2 level, which means it represents the highest mastery of English. It’s often used in specialized or highly formal contexts and helps you communicate with precision and subtlety, much like a native speaker.

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