twig
noun
a slender shoot of a tree or other plant.
Used to express actions, events, or states that have not yet occurred but are expected to happen.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
"Stay," cried he, "if he is an old hand he will twig the officer."
From It Is Never Too Late to Mend by Charles Reade