Mud, mire, slush. Now chiefly English regional (chiefly north-western and north-west midlands).
sea-slutch, star-slutch: see the first element.
Late Middle English; earliest use found in Patience. Origin uncertain: perhaps ultimately an imitative or expressive formation.
verbdialect British, Midlands English
1To cover or splash (a person or thing) with mud; to dirty, soil.
2To wade about in mud, water, etc.; to move laboriously or trudge through mud, etc.
Late 17th century (in an earlier sense). From slutch.