|ändə|lā, -njə- noun
( -s )
Etymology: French ondulé wavy, from past participle of onduler to wave, ripple, back-formation from ondulation wave, concentric wave-motion in a liquid or gas, probably from (assumed) New Latin undulation-, undulatio concentric wave motion in a liquid or gas — more at undulation
: a wavy weaving pattern produced by a special reed that alternately spreads and converges a small group of warp threads