Middle Primitive Elvish
ben
root. corner (from inside), angle from inside
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
A (Noldorin only?) root in The Etymologies of the 1930s glossed “corner (from inside), angle from inside” with only one derivative, N. bennas “angle” (Ety/BEN). It might be a latter iteration of ᴱ√VENE “shape, cut out, scoop” from the Qenya Lexicon of the 1910s (originally glossed “small boat”) with derivatives like ᴱQ. vene/G. bent “small boat” and ᴱQ. venie/G. benn “shape, cut” (QL/100-101; GL/22).