- An immovable mass of floating logs crowded together.
- A deadlock, as in negotiations; an impasse.
- An excess of logs being conveyed on a <xref>river</xref>, so that their motion halts.
- A <xref>clog</xref> or such <xref>jam</xref> or <xref>mess</xref> that <xref>halts</xref> or greatly delays <xref>progress</xref>.
- an immovable mass of logs blocking a river
- any stoppage attributable to unusual activity