Lustrous-white precious metal used in jewelry and dinnerware, whose chemical symbol 'Ag' is derived from its Latin name 'Argentum'

Harvard, MIT or Stanford, for short3 Container you'd spot at a funeral3 Pony's "hello!"5 House made of ice blocks5 Supreme being3 Doublemint or Trident, for one3 Purposely exclude4 Extinct flightless bird4