silt /sɪlt/noun 3verb 3forms 3phrases 1 noun3 •Mud or fine earth deposited from running or standing water. •Any material with similar physical characteristics, regardless of its origins or transport. •A particle from 3.9 to 62.5 microns in diameter, following the Wentworth scale. verb3 •To clog or fill with silt. •To become clogged with silt.They are city-dwellers, men whose lives pass in the shadows of buildings, whose lungs are silted with coalsmoke, and few will ever cross the sea. — 2017 •To flow through crevices; to percolate. formssilted · silting · silts Phrases with silt silt upTo become filled or clogged with silt.