Leader

Anführer

(one having authority)

Anführerin

(one having authority)

Chef

(one having authority)

Führer

(one having authority)

Führerin

(one having authority)

Hauptmann

(one having authority)

Kopf

(one having authority)

Leitartikel

(principal article in a newspaper)

Leiter

(one having authority)

Leittier

(dominant animal in a group)

Regenrinne

(pipe to conduct water from the roof)