cog
noun
kɒɡ
noun
1
a
wheel
with
small
bits
sticking
out
around
the
edge
that
fit
together
with
the
bits
of
another
wheel
as
they
turn
in
a
machine
齿轮
2
one
of
the
small
bits
that
stick
out
on
a
cog
嵌齿; 轮齿
3
a cog in the machine/wheel
someone
who
only
has
a
small
unimportant
job
in
a
large
organization
〔大机构中的〕无足轻重的人物，小人物