constitutionalize

1. To provide with or make subject to a constitution.
2. To incorporate into or sanction under a constitution: "Today a like kind of wisdom might caution against constitutionalizing every grievance that might (or might not) appear tomorrow" (Potter Stewart).

The verb has 3 meanings:

Meaning #1: provide with a constitution, as of a country

Meaning #2: take a walk for one's health or to aid digestion, as after a meal

Meaning #3: incorporate into a constitution, make constitutional
  Synonym: constitutionalise