To glaum at

from The Collaborative International Dictionary of English v.0.48

Glaum \Glaum\, v. i. [Etymol. uncertain.]
   To grope with the hands, as in the dark. [Scot.]
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   {To glaum at}, to grasp or snatch at; to aspire to.
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            Wha glaum'd at kingdoms three.        --Burns.
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