Also means
tricky
Usage Note
Espinoso literally describes plants covered in thorns (espinas), but its figurative use — a thorny or difficult issue — is equally common: un asunto espinoso (a tricky matter). The feminine form is espinosa; the noun espina means both thorn and fish bone.
Examples
"La rosa tiene tallos espinosos."
Natural Translation
The rose has thorny stems.

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