a nobleman (duke or marquis or earl or viscount or baron) who is a member of the British peerage
"When the new duke arrived at the royal garden party, he was welcomed by his fellow peers before addressing the crowd."
A look; a glance.
"After waiting for a long time at the bus stop, he finally found an alley where he could peer to relieve himself."
Somebody who is, or something that is, at a level or of a value equal (to that of something else).
Someone who pees, someone who urinates.
In plain English: A peer is someone who is about your own age and has similar interests or social status.
"She is the oldest peer in the group."
Usage: Use "peer" to describe someone who belongs to your same social group or professional circle, such as a fellow student or colleague. Do not confuse it with "pair," which refers to two things that match or go together.
To look with difficulty, or as if searching for something.
"After years of hard work and dedication, she finally earned a seat at the board to peer with her former mentors."
To make equal in rank.
In plain English: To peer means to look closely at something by squinting or leaning forward.
"She had to peer through the fog to see the road ahead."
Usage: As a verb, peer means to look closely or stare intently at something, usually by leaning forward. Do not use it when you mean to compare people's social status or rank.
The word "peer" comes from Old English and originally meant to look or gaze. It traveled into modern English through Middle English while retaining its core meaning of looking closely.