Roronoa Zoro's Tiger Hunt is one of his powerful techniques, known in Japanese as "Tora Gari", from his Three Sword Style arsenal in the One Piece series. The meaning of "Tora Gari" itself is "Tiger Hunting," which clearly gives a vivid description of how fierce and predatory the attack is.
To perform the Tiger Hunt, Zoro assumes a unique stance by placing his hand swords over the blade held in his mouth. From here, he performs a forceful forward-descending slash. The technique is aggressive in nature and generally used when Zoro wants to finally finish off foes.
One of the more striking visuals in the Tiger Hunt technique is the manifestation of a tiger's head aura that appears behind Zoro when he performs this attack. This reinforces the technique's theme and makes an already very intimidating visual for Zoro on the battlefield even more so. The tiger imagery represents the solidification of his spirit of fighting, which represents, in itself, the ferocity of the technique.
Now, the Japanese term "Tora Gari" has a double meaning, quite literally: catching tigers, and it refers to some sort of Mohican hairstyle. Typical is the creativity in Eiichiro Oda's naming techniques throughout One Piece—usually incorporating some pun or cultural reference that enriches the world-building.
The Tiger Hunt is a technique that is not independent but rather one of the many thematic series of tiger-inspired moves within Zoro's repertoire. A much stronger form of this technique is the "Ultra Tiger Hunt," which Zoro uses during more difficult battles. This progress from the Tiger Hunt to the Ultra Tiger Hunt is illustrative of the character development of Zoro as a swordsman and how he was able to further improve on personal techniques.
Zoro's association with techniques having names that are associated with tigers has become a sort of running theme across the series. As many fans would point out, the term "tiger" was referenced a lot when referring to Zoro's attacks, such as Tiger Hunt and Tiger Slash. This thematic coherence is what seals Zoro's character identity and fighting style together, hence making his techniques easily recognizable to One Piece fans.
Because of its popularity, the Tiger Hunt Technique has been depicted in a lot of One Piece merchandise. For example, a collectible statue titled "Roronoa Zoro Three Pole Flow Polar Tiger Hunt" has been made with Zoro in the midst of striking with this legendary move. Another one, more intricate figurine titled "Roronoa Zoro Ultra Tiger Hunt" by Big Player Studio depicts Zoro striking in the upgraded version of the technique with LED light effects. These collectibles are the symbols of endless devotion by the fans for this technique and its place in the staple move set of Zoro.
In the case of Zoro's fighting style, the Tiger Hunt holds a special place for being very effective. He is known to end his fights with just one, clean attack in most fights; the Tiger Hunt is one of those techniques. This aspect of Zoro's approach to combat shows how he is efficient as a swordsman and how techniques can be truly devastating if done right.
The Tiger Hunt has been used in many story arcs, showcasing its versatility and that Zoro is going to rely on it in various combat situations. Its repeated use throughout the course of the series is proof of how significant it is within Zoro's arsenal and how effective it proves to be against a very broad array of enemies.
An interesting case of this use of Zoro's tiger-themed techniques is in the One Piece movie "Stampede," more specifically during Zoro's fight against Admiral Fujitora, whose epithet "Wisteria Tiger" fits quite well with his set of tiger-associated moves. Not part of the canon series, the thematic connection that makes their fight and character design most interesting and deep for One Piece is absent.