For  --The word translated as "for" introduces a reason or explanation so "because" and, in questions, "why." However, since this word always appears in the second position, it is more like an aside remark like, "consequently" or "as a cause." 

my -- "My" is the first-person possessive singular pronoun. This pronoun follows the noun so "of mine."  As a genitive object of a preposition, as here, it means movement away from something or a position away from something else.

missing "the"  -- (MW) The untranslated word is the Greek definite article, which usually precedes a noun and, without a noun, takes the meaning of "the one." The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," "those"). See this article for more. 

flesh -- The Greek word translated as "the flesh" means "flesh," "meat," and "the physical order of things" as opposed to the spiritual. In contrasting it with "spirit," he is making it clear that he has been using it in the later sense.

is -- The verb "is" here is the common form of "to be" in Greek. It means to have a certain characteristic or remain in a certain condition. It also equates terms or assigns characteristics.

meat -- This word means "meat", "pasture", "eating, "taste," and "flavor. It is from a verb meaning "eating" and "eating up." Jesus only uses this word six times, always in the sense of "eating."

indeed, -  (OS) In the source used by the KJV, this was the adverbial form, but in our current source, the noun is translated as "true" primarily means "unconcealed", based on the noun form, which means "what is not hidden."   It, therefore, means "so true," an accentuated form of true, with nothing hidden.

and -- The Greek word translated as "and" is used as the conjunction "and," but it also is used to add emphasis ("also"). In a series, it is can be translated as "not only...but also." After words implying sameness "as."

my -- "My" is the first-person possessive singular pronoun. This pronoun follows the noun so "of mine."  As a genitive object of a preposition, as here, it means movement away from something or a position away from something else.

missing "the"  -- (MW) The untranslated word is the Greek definite article, which usually precedes a noun and, without a noun, takes the meaning of "the one." The Greek article is much closer to our demonstrative pronouns ("this," "that," "these," "those"). See this article for more. 

blood -- "Blood" is the Greek word that means "blood," "bloodshed," and "kinship." Its common double meaning of bloodshed and kinship.

is -- The verb "is" here is the common form of "to be" in Greek. It means to have a certain characteristic or remain in a certain condition. It also equates terms or assigns characteristics.

drink  - -  "Drink" is from a noun which means "drinking", "drink", "beverage", "carousal," and "revelry."

indeed, -  (OS) In the source used by the KJV, this was the adverbial form, but in our current source, the noun is translated as "true" primarily means "unconcealed", based on the noun form, which means "what is not hidden."   It, therefore, means "so true," an accentuated form of true, with nothing hidden.