Real Dictionary

of
preposition: You use of to combine two nouns when the first noun identifies the feature of the second noun that you want to talk about.

OF in American English
abbreviation: Old French

of in American English 1
from
preposition: (used to indicate distance or direction from, separation, deprivation, etc.)

of in American English 2
have
outfield

of in British English
abbreviation for: Old French (language)
preposition: used with a verbal noun or gerund to link it with a following noun that is either the subject or the object of the verb embedded in the gerund

of- in American English
ob-
prefix