To try to do too much; to take on or attempt more than one is capable of doing.
To do something beyond an appropriate limit, or beyond one's ability.
To defeat or override a person's interest in property; (Britain, specifically) of a holder of the legal title of real property: by mortgaging or selling the legal title to a third party, to cause another person's equitable right in the property to be dissolved and to be replaced by an equitable right in the money received from the third party.
To sail on one tack farther than is necessary.
To reach above or beyond, especially to an excessive degree.
Of a horse: to strike the heel of a forefoot with the toe of a hindfoot.
An act of extending or reaching over, especially if too far or too much; overextension.
Of a horse: an act of striking the heel of a forefoot with the toe of a hindfoot; an injury caused by this action.