dispensary (n.)

"place for weighing out medicines, room or shop in which medicines are dispensed," 1690s, from Medieval Latin dispensarius, as a noun, "one who dispenses," from Latin dispensare "disburse, administer, distribute (by weight);"  frequentative of dispendere "pay out," from dis- "out" (see dis-) + pendere "to hang, cause to hang; weigh; pay" (from PIE root *(s)pen- "to draw, stretch, spin"). Especially "public institution, primarily intended for the poor, where medical advice is given and medicines dispensed for free or for a small charge."