the.com/caulk gun

A trigger-pulled silicone bazooka that turns shaky hands into surgeons of the seam.

means A handheld tool with a trigger-operated plunger that forces caulk or sealant out of a tube in a controlled bead, used to fill gaps and joints.

from The "gun" is the easy part — English has long stretched that word to any trigger-pulled, point-and-shoot tool (grease gun, glue gun, staple gun). "Caulk" is the older, richer thread: it descends through Old North French "cauquer" from Latin "calcare," to tread or press down (the same root that gives us "calcitrate" and walks alongside "calx," heel). It began as a shipwright's verb — driving fibers and tar into the seams between hull planks so the sea stayed out. The pressing and packing migrated from boat timbers to bathroom tiles, and when someone fitted that sealant into a tube and gave it a trigger, the caulk gun was born.

Leverage math
Ratchet rods multiply grip force up to twelvefold.
Smooth talker
A wet finger is still the best finishing tool.
Dripless models
Reverse-thrust springs stop the post-squeeze ooze.
Pressure caps
Some pneumatic versions hit dozens of pounds per square inch.
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