(idiomatic) Any of the most likely winners in a contest, election, etc. / (finance, business) One who engages in front running.

A cold front of very cold arctic air advancing on somewhat less cold air.

(idiomatic) At the beginning; before anything begins. / At the front. / (soccer) In an attacking position.

(idiomatic) Open, honest; tending to disclose information; truthful.

(physics, meteorology) The boundary between two different air masses, or a portion thereof, which produces appreciable cloudiness and precipitation and is usually accompanied by significant shifts in wind direction.

(Britain) In the House of Commons, either of two benches nearest the floor of the chamber, one occupied by the members of the Cabinet and the other by the Shadow Cabinet.

Of a garment worn on the upper body, fastened by a zip fastener that runs the full length of the garment.

(curling) The portion of the house closer to the hog line.

present participle of front run

(finance) The illegal practice of a stockbroker who, on receiving a large client order, places an order for his or her own account ahead of the client's, knowing that when the client's order is placed it will move the market and create a profit for the broker.