Retentive \Re*ten"tive\, a. [Cf. F. r['e]tentif.]

Having power to retain; as, a retentive memory.

Nor airless dungeon, nor strong links of iron, Can be retentive to the strength of spirit. --Shak.

Source: Webster's Revised Unabridged Dictionary (1913)
 

Retentive \Re*ten"tive\, n. That which retains or confines; a restraint. [R.]

--Bp. Hall.

Source: Webster's Revised Unabridged Dictionary (1913)