double dagger
double obelisk
diesis

Occasionally the double dagger (-) is seen.

Leo was working with double daggers.

A third footnote employs the double dagger.

In cataloging, a double dagger is used to delimit MARC subfields.

In chemistry, the double dagger is used in chemical kinetics to indicate a transition state species.

In typography the double cross is called double dagger, double obelisk and diesis.

A double dagger of anguish ripped through Eden, awakening her to her folly and the truth she'd sought.

A double dagger (-) indicates a white non-constituency member.

The other problem plays are marked below with a double dagger (-).

The colt was named after the printer's symbol "-" also known as a "double dagger".