verb

• (ambitransitive, Scotland) To spin.
  "About nine in the morning, in a burst of wintry sun between two squalls of hail, I had my first look of Holland - a line of windmills birling in the breeze."
• (transitive) To cause (a floating log) to rotate by treading on it.
  ""That's nothing!" my companion repressed me, "anybody can birl a log. Watch this." Roaring Dick for the first time unfolded his arms. With some appearance of caution he balanced his unstable footing into absolute immobility. Then he turned a somersault."
• (transitive) To throw down a coin as one's share in a joint contribution.

noun

• (music, bagpipes) A type of grace note movement that quickly switches between low-A and low-G several times, producing a low rippling sound.

noun

• (Internet slang, LGBTQ) A girl of boyish appearance.
  "Affirmation of the desirability of birls is a key element throughout this online site even when complex issues of gender and sexual positioning are being worked through."