noun

• (music) The part of a violin bow (or that of other similar string instruments such as the viola, cello and contrabass) located at the end held by the player, to which the horsehair is attached.
• (Cockney rhyming slang) Road. Shorter, more common form of frog and toad.
• (rail transport) The part of a railway switch or turnout where the running rails cross (from the resemblance to the frog in a horse’s hoof).
• (rail transport) The part of a railroad overhead wire used to redirect a trolley pole from one wire to another at switches.

verb

• (transitive, biology) To use a pronged plater to transfer (cells) to another plate.
• (transitive, cooking) To spatchcock (a chicken).
• (intransitive) To lie sprawled out like a frog; sploot.

noun

• (derogatory, ethnic slur) A French person.
  "Yes. Can't trust the frogs."
• (Canada, offensive) A French-speaking person from Quebec.

verb

• (transitive) To unravel part of (a knitted garment), either to correct a mistake or to reclaim the thread or yarn.