jirna gismu

x1 is a/the horn [body-part] of x2; [metaphor: pointed extremity].

See also jgalu, bongu.

In notes:

bongu
x1 is a/the bone/ivory [body-part], performing function x2 in body of x3; [metaphor: calcium].
jgalu
x1 is a/the claw/nail/talon [body-part] of x2; [metaphor: pointed, penetrating, physical weapon].
jicyjirna
jr1=ji1 are the antlers of jr2=ji2
jirnytabra
t1=j1 is a/the horn [brass-wind/lip-reed musical instrument; default
tabryjirna
j1=t1 is a/the horn [primitive type/predecessor of brass-wind/lip-reed musical instrument] cut from j2.
pavjima
x1 is a unicorn of type/mythology x2