Initialism of to be dated. / Initialism of to be decided. / Initialism of to be declared. / Initialism of to be defined. / Initialism of to be deducted. / Initialism of to be delivered.

A surname.

(figuratively) A cue, warning, or alert; a sign or signal that something is wrong. / (idiomatic, US) red rag

(fantasy) A female of the dwarf race.