adj

• (now rare) Merry, joyous, full of mirth; later especially, frolicsome, sportive, full of playful mischief.
  "The frolick wind that breathes the Spring, Zephyr with Aurora playing, As he met her once a Maying There on Beds of Violets blew,"
• (obsolete, rare) Free; liberal; bountiful; generous.

verb

• (intransitive) To make merry; to have fun; to romp; to behave playfully and uninhibitedly.
  "We saw the lambs frolicking in the meadow."
• (transitive, archaic) To cause to be merry.

noun

• (obsolete, chiefly US) A social gathering.
  "He came clattering up to the school door with an invitation to Ichabod to attend a merry-making or “quilting frolic,” to be held that evening at Mynheer Van Tassel’s"