constipation (n.) Look up constipation at Dictionary.com
c. 1400, "constriction of tissue," from Late Latin constipationem (nominative constipatio), noun of state from past participle stem of Latin constipare "to press or crowd together," from com- "together" (see com-) + stipare "to cram, pack" (see stiff (adj.)). Specifically of the bowel condition since 1540s.