To go ahead or show the way so that others follow; an imperative form meaning 'lead the way' or 'continue'.
2.
Globalinformalpejorative
To encourage another person's romantic or sexual interest dishonestly or to give false hope.
3.
Globalneutral
To have a lead (a piece of information or clue) that may help locate a person or solve a problem; often used in investigative contexts as 'have a lead on'.
4.
Globalneutral
To hold an advantage or head start over someone or something, typically in a contest or pursuit.