د—dāl—d

‘dāl’ (د) is the tenth letter of the Persian alphabet, and it is exactly like a ‘d’ in English.

In this video Keramat shows you how to write the letter in a Persian style of handwriting, with three examples of words showing the letter in different positions:

at the beginning, دل—del—heart
at the beginning, special case: در—dar–door
in the middle, چمدان—chamedān—suitcase
at the end, تند—tond—fast or spicy (the meaning depends on the context)