butterfly

noun

a swimming stroke in which the arms are thrown forward together out of the water while the feet kick up and down

butterfly stroke
diurnal insect typically having a slender body with knobbed antennae and broad colorful wings

verb

to talk or behave amorously, without serious intentions
“They are butterflying all over town.”
flirt
to cut and spread open, as in preparation for cooking
“I butterflied the lamb chop and stuffed it with herbs.”
to flutter like a butterfly
“The paper began to butterfly in the wind.”