logjam noun 2verb 1forms 3 noun2 •An excess of logs being conveyed on a river, so that their motion halts. •(figurative) A clog or such jam or mess that halts or greatly delays progress.Efforts to amend the law got sidetracked in an administrative logjam. verb1 •To deliberately impede or delay the progress of. formslogjammed · logjamming · logjams