1.noun(often capitalized) A mock-honorific title given to a particular person who is stingy.
"Don't expect a big tip from El Cheapo over there."
2.nounA person who is stingy; a cheapskate.
"He's such an el cheapo that his wallet hasn't been opened for days."
3.nounOn the game show The Price Is Right, used in reference to the lowest two-digit number on a board of (initially) nine numbers in the pricing game Money Game.
4.adjectiveCheap; inexpensive; of low quality.
"I only had five bucks, so I bought the el cheapo headphones."