A man who does or can play the lead role in a movie, play or other production; a person who frequently plays such roles.

plural of lead plane

In aerial firefighting the aeroplane that leads and directs the air tankers

(nautical) An imaginary line between two objects that can be used to chart a safe course in a difficult situation.

plural of lead glance

One of two lead compounds; plumbous chloride (PbCl2), or plumbic chloride (PbCl4)

plural of leading line

Thin sheet lead, used in lining tea chests.

A mill for grinding white lead. / A disc made of lead and charged with emery, used for grinding gems.

plural of lead mill