To examine, look into, or scrutinize in order to discover something hidden or secret.
To inquire into or study in order to ascertain facts or information.
To conduct an inquiry or examination.
To try to find; to look for; to search for.
To try to acquire or gain; to strive after; to aim at.
To try to reach or come to; to go to; to resort to.
To navigate through a stream.
To ask for; to solicit; to beseech.
To attempt, endeavour, try
The operation of navigating through a stream.