~ 1
■ adjective
1》 having been previously.
↘of or occurring in the past.
2》 ( the ~ ) denoting the first or first-mentioned of two people or things.
Origin
ME: from OE forma (see foremost ) + -er 2 .
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~ 2
■ noun
1》 a person or thing that forms something.
2》 a transverse strengthening part in an aircraft wing or fuselage.
3》 a frame or core around which an electrical coil can be wound.
4》 [in combination ] Brit. a person in a particular school year: a fifth-~.