Meaning of costic in English:

costic

Pronunciation /ˈkɒstɪk/

adjective

dialect British, US
  • Affected by or causing constipation; = "costive".

Origin

Late 16th century. Apparently an alteration (with suffix substitution) of costive, probably by association with caustic (which is attested in the 16th and 17th centuries in the forms costic, costick); compare forms of costive with medial -au-.