fasten
verb (used with object)
to attach firmly or securely in place; fix securely to something else.
Used to describe an action that will be fully completed or achieved by a specific point in the future.
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
In a few minutes the larvæ will have fastened themselves on.
From The Boy With the U. S. Fisheries by Francis Rolt-Wheeler