跨刀

跨刀	kuà dāo	to appear in sb's show / (fig.) to give one's support to an endeavor by taking on an important role in it
跨	kuà	to step across / to stride over / to straddle / to span
刀	Dāo	surname Dao
刀	dāo	knife; blade; single-edged sword; cutlass (CL:把) / (slang) (loanword) dollar / classifier for sets of one hundred sheets (of paper) / classifier for knife cuts or stabs / (Internet slang) to bargain; to ask for a small discount (esp. on second-hand marketplaces)