1. (US, prosody) A metrical foot consisting of three syllables, two short
and one long (e.g the word "velveteen").
2. (US, prosody) A fragment, phrase or line of poetry or verse using this
meter; e.g. “Every Who down in Whoville liked Christmas a lot, but the
Grinch, who lived just north of Whoville, did NOT!” (Dr. Seuss, How
the Grinch Stole Christmas.).