The Collaborative International Dictionary
Through \Through\, adv.
From one end or side to the other; as, to pierce a thing through.
From beginning to end; as, to read a letter through.
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To the end; to a conclusion; to the ultimate purpose; as, to carry a project through.
Note: Through was formerly used to form compound adjectives where we now use thorough; as, through-bred; through-lighted; through-placed, etc.
To drop through, to fall through; to come to naught; to fail.
To fall through. See under Fall, v. i.
Usage examples of "to drop through".
Blood, and thereupon those gentlemen of Spain were induced without further trouble beyond a musket prod or two to drop through a scuttle to the deck below.
I won't get into the whole story except to say that we had to drop through the middle of a dogfight overhead and I lost two of my men when we were nearly hit by an F-15 fighter.
There was a high bank of thin clouds they'd have to drop through to get a view of the target.