1) the joint connecting the foot with the leg (ankle)
2) (an act of) connecting (connection)
3) any one of the bars or wire rods connecting the centre of a wheel with the outer edge (spoke)
4) a narrow passage of water connecting two seas; trouble; difficulty (strait)
5) of the navel (umbilical cord = the cord connecting an unborn baby to its mother (at her placenta)) (umbilical)
(an instance of) mentioning something; a statement about a person's character or abilities; a note telling where certain information may be found
remark, citation