(intransitive) To take part in a trip or expedition; to travel.

Great skill or knowledge in a particular field or hobby. / Advice, or opinion, of an expert.

(transitive, rare) To supply with expert knowledge or advice.

(physics, philosophy) An attempt to solve a problem using the power of human imagination.

(psychology) The automatic, natural, habitual way in which a person explains events.

(of a person) The amount of time one is expected to live. / (figuratively, by extension, of an idea or an object) The amount of time something is expected to last.

Intended to serve as an explanation. / (of a person) Disposed to explain.

Suitable to effect some desired end or the purpose intended. / Affording short-term benefit, often at the expense of the long-term. / Governed by self-interest, often short-term self-interest.

A method or means for achieving a particular result, especially when direct or efficient; a resource.

Fast, prompt, speedy. / (of a process or thing) Completed or done with efficiency and speed; facilitating speed.