Group formed at Trinity College in 1895

• This dir
• Horizontal, on a puzzle: abbr
• Like hor. puzzle answers
• Like exactly half the entries in this puzzle (abbr.)
• Extreme: comb. form
• Unlike this answer (abbr.)
• From l. to r
• Not down (abbr.)
• Horizontal, like this answer: abbr

Wikipedia Word definitions in Wikipedia
ACR may refer to: