eye to the main chance, have an
Look out for one's own best interest. For example, Tom is watching the company's progress very closely; he always has an eye to the main chance. [c. 1600]
When To Use “A,” “An,” And “The”Articles are words that make it clear whether a noun refers to something specific or something general. The English language has only three articles: a, an, and the. This stanza from Emily Dickinson’s poem “A Bird Came Down the Walk” demonstrates the use of all three: A Bird came down the Walk— He did not know I saw— He bit an Angleworm in halves And …
The American Heritage® Idioms Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.