an advantage held by a competitor in a race

evidence pointing to a possible solution

a position of being the initiator of something and an example that others will follow (especially in the phrase ‘take the lead’)

the angle between the direction a gun is aimed and the position of a moving target (correcting for the flight time of the missile)

the introductory section of a story

(sports) the score by which a team or individual is winning

an actor who plays a principal role

(baseball) the position taken by a base runner preparing to advance to the next base

an indication of potential opportunity

a news story of major importance

the timing of ignition relative to the position of the piston in an internal-combustion engine

restraint consisting of a rope (or light chain) used to restrain an animal

thin strip of metal used to separate lines of type in printing

a jumper that consists of a short piece of wire

the playing of a card to start a trick in bridge