outside

Concise Oxford English Dictionary © 2008 Oxford University Press:
outside/aʊtˈsʌɪd/

▶noun the external side or surface of something.

■ the part of a path nearer to a road.

■ the side of a bend or curve where the edge is longer.

■ (outsides) the outer sheets of a ream of paper.

■ the external appearance of someone or something.

▶adjective

• 1 situated on or near the outside.

  ■ (in hockey, soccer, etc.) denoting positions nearer to the sides of the field.

• 2 not of or belonging to a particular group.

  ■ beyond one's immediate personal concerns.

▶preposition & adverb

• 1 situated or moving beyond the boundaries of.

  ■ not being a member of.

  ■ (in hockey, soccer, etc.) closer to the side of the field than.

• 2 beyond the limits or scope of.

– phrases
at the outside at the most.
an outside chance a remote possibility.
outside of informal, chiefly N. Amer. beyond the boundaries of.

■ apart from.