Noun
A northern duck (Dafila acuta), native of both continents. The adult male has a long, tapering tail. Called also gray duck, piketail, piket-tail, spike-tail, split-tail, springtail, sea pheasant, and gray widgeon.
The sharp-tailed grouse of the great plains and Rocky Mountains (Pediocaetes phasianellus); -- called also pintailed grouse, pintailed chicken, springtail, and sharptail.
Source: Webster's dictionaryA daughter, Dafila, was born later in the same year (dafila is the old scientific name for a pintail ). Source: Internet
Thus, hieroglyphic writing representing a pintail duck is read in Egyptian as sꜣ, derived from the main consonants of the Egyptian word for this duck: 's', 'ꜣ' and 't'. Source: Internet