In football, an attacking role behind the strikers; forward playing, free-role attacking midfielder; plays in "the hole" (between strikers and midfield). Some would say this is NOT an attacking midfielder: it is vague enough, and seen differently in different areas.
Del-Piero; Totti; Zidan; Riquelme; Bergkamp
But performed to a high-art by Messi
"Did you see how he dropped deep to pull the strings himself?
yeah, that play was trequartista redefined".