smock

nouns

a loose coverall (coat or frock) reaching down to the ankles
dust coat, duster, gabardine, gaberdine, smock

verbs

embellish by sewing in straight lines crossing each other diagonally
"The folk dancers wore smocked shirts"
smock
is derived from
smocking
is a type of (narrower)
make more attractive by adding ornament, colour, etc.
"Decorate the room for the party"; "beautify yourself for the special day"
adorn, beautify, decorate, embellish, grace, ornament