Noun
pastry bag (plural pastry bags)
A flexible bag from which icing is forced through a small nozzle to make various designs of piping.
Synonym: piping bag
Actually the Kewpie bottle looks like it could double as a pastry bag! Source: Internet
Also, I fill the profiterol by making a tiny hole in its base (I use a pastry bag equipped with a sharp tiny tip) and injecting the whipped cream there. Source: Internet
Fit pastry bag with coupler, and fill with remaining buttercream. Source: Internet
Fit pastry bag with petal tip. Source: Internet
I combined these two ideas into one: putting the dough into a zip-loc bag, cutting off the tip to make my own pastry bag and then piping out what ended up looking like small turds onto a parchment-lined pastry sheet. Source: Internet
Fill a pastry bag with the dough. Source: Internet