rat-trap noun. ['rattrap] LME.
[from RAT noun¹ + TRAP noun¹.]
1. A trap for catching rats. LME.
b. transf. A shabby or ramshackle building. colloq. M19.

2. More fully rat-trap pedal. A bicycle pedal having two parallel toothed iron plates to provide a grip. L19.

3. Bricklaying. In full rat-trap bond. A form of Flemish bond in which the bricks are laid on edge and the headers span the whole thickness of wall, dividing the wall cavity into square spaces. M20.

[TahlilGaran] English Dictionary ▲