asymmetric-lipped
adjectiveUK /ˌeɪsɪˈmɛtrɪk lɪpt/
US /ˌeɪsɪˈmɛtrɪk lɪpt/
Having lips that are not the same on both sides.
The clay mask had an asymmetric-lipped smile that made it look funny.
OTHER MEANINGS
2. Describing a flower whose petals form lips of unequal size or shape.
The orchid is asymmetric-lipped, with one petal much larger than the other.
3. Describing a container or opening whose rim is not level on both sides.
The old pitcher was asymmetric-lipped, so it poured unevenly.
4. Describing a musical instrument's mouthpiece with an uneven edge.
The damaged flute had an asymmetric-lipped mouthpiece that spoiled the tone.