que·bra·cho 
(kā-brächō)
(kā-brächō)n. pl. que·bra·chos
1. Either of two South American trees, Aspidosperma quebracho-blanco whose bark is used in medicine, or Schinopsis lorentzii whose wood is an important source of tannin.
2. The bark or wood of either of these trees.
[Spanish, alteration of quiebrahacha : quebrar, to break (from Latin crepāre, to crack) + hacha, axe (from French hache, from Old French, of Germanic origin).]
- on the cheap
- on the coattails of
- on the contrary
- on the cuff
- on the cusp
- on the defensive
- on the dole
- on the dot
- on the double
- on the drawing board
- on the edge
- on the face of it
- on the fence
- on the fly
- on the front burner
- on the go
- on the ground
- on the heels of
- on the hoof
- on the horns of a dilemma
- on the house
- on the increase
- on the inside
- on the job
- on-the-job