In general, to act in a way which results in an object becoming completely permeated or impregnated by some quality.
To wet or stain an object completely with some physical quality.
To be involved in; to form strong attachments to.
To surround, accompany, or attend.
To spend money, time, or energy on something, especially for some benefit or purpose; used with in.
To commit money or capital in the hope of financial gain.
To ceremonially install someone in some office.
To lay siege to.
To prepare for lost wax casting by creating an investment mold (a mixture of a silica sand and plaster).
To make investments.
To formally give (someone) some power or authority.
To envelop, wrap, cover.
To formally give (power or authority).
An unnamed tropical weather pattern "to investigate" for development into a significant (named) system.