1. to remove a blockage from something, especially a pipe or drain

Examples

• I need to unclog the kitchen sink drain.
• The plumber came to unclog our toilet.
• Use a plunger to unclog the bathtub.
• Hot water helped unclog the grease from the pipes.
• She used a wire coat hanger to unclog the shower drain.
• The drain cleaner should unclog the blockage overnight.