Great Spin Attack
From Zelda Legends Wiki
Usage: After performing a Spin Attack, keep pressing the sword button to continue the spin attack.
In ALttP, technique is only available in the Gameboy Advance port of A Link to the Past, and requires complete the multi-player Four Swords game and other quests before it may be learned.
In The Minish Cap, Link learns this attack from the swordsmaster, Swiftblade the First. The swordsmaster, Greatblade, teaches the Great Spin Time Upgrade, allowing Link's Spin Attack to last even longer.
This move is similar to the Hurricane Spin.