1) To grin or yawn 
Gern is an U-Bahn station in Munich on the U1, it opened on 24 May 1998. The station includes displays on local history and is also noted for its innovative lighting; nine pyramidal aluminium fixtures give the illusion of daylight streaming in from above. ...
• (v. t.) To grin or yawn.
Gern transitive verb [ See Grin .] To grin or yawn. [ Obsolete] '[ /He] gaped like a gulf when he did gern .' Spenser.