un·clog 
/ˌʌnˈklɑ:g/ verb
un·clogs; un·clogged; un·clog·ging /ˌʌnˈklɑ:g/ verb [+ obj] : to open (something) so things can pass or flow through
▪ He unclogged the drain/sink/toilet. ▪ He had a procedure done to unclog his arteries. ▪ finding ways to unclog busy roads
▪ He unclogged the drain/sink/toilet. ▪ He had a procedure done to unclog his arteries. ▪ finding ways to unclog busy roads
