Smart Definition
Etymology
Pronunciation
filoso
sharp
file
tool for sharpening
+
-oso
full of
Filoso means sharp and can be thought of as file0 (tool for sharpening0) + -oso1 (full of1), so it's something full of1 the quality of a file0.
adjective
  1. sharp
    Sharp or keen-edged
    Ten cuidado con ese cuchillo, está muy filoso. // Be careful with that knife, it's very sharp.