擦边

擦边	cā biān	to make light contact with the edge of sth / (fig.) to be nearly (a certain age); to be close to (danger) / (fig.) to be marginal (in terms of relevance or legality)
擦	cā	to rub; to scratch / to wipe; to polish / to apply (lipstick, lotion etc) / to brush (past) / to shred (a vegetable etc)
边	biān	side / edge / margin / border / boundary / CL:个 / simultaneously
边	bian	suffix of a noun of locality