noun which may take the genitive case particle 'no'
mottled; speckled; grainy
Describes a fabric or surface with a mixed, irregular pattern of colors or textures, often used in fashion or textile contexts.
This jacket is made of a mottled fabric.
Speckled knitwear is trending this year.
杢 (もく) refers to wood grain or a mottled pattern, and 調 (ちょう) means 'tone' or 'style', together describing a wood-grain-like mottled appearance.