It comes from working in kitchens. It means to remove something from the menu, or otherwise make it unavailable.
replyAlso seashells.
reply86 seashells? I don't even know what do with the three seashells.
replyGreetings and salutations!
replyI understood that reference.
Surely a SketchySeaBeast could come up with uses for at least three seashells
replyTraditionally tossing excess baggage overboard when the situation gets grim enough.
replyLike when a previously sturdy old sailing ship starts taking on water, for instance in the 18th century and beyond.
Numerical equivalent to "deep-six."