To catch at

from The Collaborative International Dictionary of English v.0.48
Catch \Catch\, v. i.
   1. To attain possession. [Obs.]
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            Have is have, however men do catch.   --Shak.
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   2. To be held or impeded by entanglement or a light
      obstruction; as, a kite catches in a tree; a door catches
      so as not to open.
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   3. To take hold; as, the bolt does not catch.
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   4. To spread by, or as by, infecting; to communicate.
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            Does the sedition catch from man to man? --Addison.
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   {To catch at}, to attempt to seize; to be eager to get or
      use. "[To] catch at all opportunities of subverting the
      state." --Addison.

   {To catch up with}, to come up with; to overtake.
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