Obsolete form of ear.
"The old manuscript contained an archaic spelling where the word ere was actually a misspelling of er, the obsolete form of ear."
At an earlier time.
"Ere the sun had fully risen, we were already halfway up the mountain trail."
Before; sooner than.
"Ere the sun sets, we must finish packing for our trip before it rains again."
Before.
"Ere the sun had even risen, he was already out of bed and working in the garden."
A language spoken on Manus Island in Papua New Guinea.
"The linguist spent weeks studying ere, a unique Papuan language spoken only on Manus Island."