Noun
dalet (plural dalets)
The fourth letter of many Semitic alphabets (Phoenician, Aramaic, Hebrew, Syriac, Arabic and others).
One must be careful with regard to the form of the letters, so that a yud will not resemble a vav, nor a vav a yud; a kaf should not resemble a beit, nor a beit a kaf; a dalet should not resemble a resh, nor a resh a dalet. Maimonides
Benny Morris (2003), p. 242 Within the framework of the establishment of Jewish territorial continuity foreseen by Plan Dalet, the forces of Haganah, Palmach and Irgun intended to conquer mixed zones. Source: Internet