Real Dictionary

Set in American English
a god of evil, represented as having an animal's head with square-tipped ears
to place in a sitting position; cause to sit; seat
intransitive verb: to pass below the horizon; sink
noun: the brother and murderer of Osiris, represented as having the form of a donkey or other mammal and regarded as personifying the desert
transitive verb: to put (something or someone) in a particular place

set in British English 1
verb: to put or place in position or into a specified state or condition

set in British English 2
noun: a number of objects or people grouped or belonging together, often forming a unit or having certain features or characteristics in common
verb: (in square dancing and country dancing) to perform a sequence of steps while facing towards another dancer

set noun uses
countable noun: A set of things is a number of things that belong together or that are thought of as a group.
countable noun: In tennis, a set is one of the groups of six or more games that form part of a match.

set verb and adjective uses
adjective: If something is set in a particular place or position, it is in that place or position.
adjective: If something is set into a surface, it is fixed there and does not stick out.
verb: If you set something somewhere, you put it there, especially in a careful or deliberate way.