淤积 yūjī to silt up Origin Definitions Defs Strokes Stroke Words Sentences Sents yūjī to silt up 淤 yū to silt up to become blocked or choked with sediment; to deposit mud or sand积 積 jī verb to accumulate to amass; to store up; to gather over timeyūjī silt deposit 淤 yū noun silt (bound form) mud or sediment deposited at the bottom of a body of water; river sludge积 積 jī verb to accumulate to amass; to store up; to gather over time