Explanation#1: Rashi explains that this is referring to a wound that is opposite the cavity of the body. (The Maharam explains that Tosfos understands Rashi means a wound that is opposite a space inside the body, even if the wound did not penetrate into this cavity.)

Explanation#2: The Yerushalmi explains that this is any wound that is actually inside the cavity of the body.

Explanation: This means a sickness that got there by itself, or not through a slash from a sword. However, we always say that if someone is slashed by a sword that we desecrate Shabbos in order to save him. This is as Shmuel said later that a "Padasa" is a reason to desecrate Shabbos, as it is a danger. They explain that this refers to a slash by a sword.

Observation: The Gemara also could have said that the difference between them is a slash of a sword and a wound that needs to be estimated. (The second version of Rabah bar bar Chanah will say that one can be healed in these cases.)

Explanation#1: These are the gums, known as Zintzivish (in Old French).

Question#1: This is difficult. The Gemara says later that the Kachi are hard (and gums are not hard).

Question#2: Additionally, in Chulin (59b) the Gemara discusses a lion whose Kachi and teeth fell out. It is not normal for gums to fall out of one's mouth.

Question#2 (cont.): Similarly, in Bava Kama (92b) the Gemara states that sixty illnesses will go to a Kacha who hears that his friend is making a meal, and he is not invited. Similarly, in Bava Metzia (42b) the Gemara discusses an ox who did not have Kachi or teeth that would enable him to eat. (In all of these cases, gums does not seem to be an appropriate translation.)

Explanation#2: It therefore appears that Kachi are big teeth known as Mishalis (in Old French), and "Shini" are the other teeth.

Explanation#1: He will give him a drink of cress with vinegar. Cress is Karshun (in Old French).

Explanation#2: Some say that this was to put on a wound (not for drinking).

Explanation: Rashi explains that this is strong wine, as is stated later (30a) strong wine that makes jugs crack.

Observation: However, we find Tilya also means weak wine, as stated in Gitin (70a) that the worst of all of them is clear weak wine.

Explanation#1: Rashi explains that the sight of the eye depends on the fat of the heart.

Explanation#2: It appears to me that the explanation is that the sight depends on the understanding of the heart.

Explanation#1: The word is read Shurai'ni with a (letter) Shin, as in "Ashurenu v'Lo Karov" - "I see it and it is not close" (Bamidbar 24:17).

Explanation#2: Alternatively, the word should be read Surayni with a Samech, rooted in the word, "Sayir Nichsei" - "he toured his possessions" found in Chulin (105a).

Explanation: The word b'Uvnasa is with a Veis, and is rooted in the word "Havanah" - "understanding." This is as stated regarding the Merkavah that it depends on the understanding of one's heart.

Opinion#1: Based on our Gemara, the Ri explains the Gemara in Chagigah (5a) which explains that the Pasuk, "And many evils and troubles will find him" refers to a bite from both a hornet and scorpion. The Ri explains that this is because they are "trouble" for each other, as someone who has a bite from both cannot be treated with either hot or cold treatment (as each bothers the other type of bite).

Opinion#2: This is unlike Rashi's explanation in Chagigah (ibid.), that these types of insects cause more trouble than others.

Question: According to his explanation, why mention these specific types of insects? (Our version of Rashi in Chagigah only states the explanation of Tosfos.)