noun

• (biology) A division into two branches.
• (by extension) Any place where one thing divides into two.
• The act of bifurcating; branching or dividing in two.
• Either of the forks or other branches resultant from such a division.
• (geography) A place where two roads, tributaries etc. part or meet.
• (nautical) The point where a channel divides when proceeding from seaward.
• (mathematics) The change in the qualitative or topological structure of a given family as described by bifurcation theory.
• (computer science) A command that executes one block or other of commands depending on the result of a condition.