Noun linkage has 4 senses
  1. linkage - an associative relation
    --1 is a kind of
    connection, connexion, connectedness
    --1 has particulars: link, nexus
    Derived form: verb link1
  2. linkage, gene linkage - (genetics) traits that tend to be inherited together as a consequence of an association between their genes; all of the genes of a given chromosome are linked (where one goes they all go)
    --2 is a kind of inheritance, hereditary pattern
  3. linkage - a mechanical system of rods or springs or pivots that transmits power or motion
    --3 is a kind of
    mechanical system
    Derived form: verb link3
  4. linkage - the act of linking things together
    --4 is a kind of
    fastening, attachment
    Derived form: verb link2