دَفَّةٌ

[Hence,] دَفَّتَا السَّرْجِ (assumed tropical:) [The two side-boards of the horse's saddle;] the two boards that lie against the two sides of the beast; (Mgh;) or the two sides [or boards] of the horse's saddle, that embrace it between them: [see قَرَبُوسٌ:] and so دَفَّتَا الرَّحْلِ (assumed tropical:) the two sides &c. of the camel's saddle. (M.) And in like manner, (M,) دَفإَتَا المُصْحَفِ (tropical:) The two sides [or boards] of the book; (M, TA;) the two things that embrace the book between them; (T, M, Mgh, K, * TA;) the two faces, that are on the two sides, of the book. (Msb.) One says, حَفِظَ مَا بَيْنَ الدَّفَّتَيْنِ (tropical:) [He retained in his memory, or got by heart, what is between the two boards, meaning the whole contents, of the book]. (TA.) [دَفَّةٌ signifies also (assumed tropical:) A board in a general sense; and so دَفٌّ. And hence, (assumed tropical:) A rudder.] And دَفَّةُ الطَّبْلِ (assumed tropical:) The thing [or piece of skin] that is upon the head of the drum: (so in a copy of the M:) or دَفَّتَا الطَّبْلِ (tropical:) the two things, (T, K,) i. e. the two pieces of skin, (TA,) that are upon the head [or rather upon the two extremities] of the [common cylindrical] drum. (T, K, TA.) One says, ضَرَبَ دَفَّتِى الطَّبْلِ (tropical:) [He beat the two skins of the drum]. (TA.)