Spĕc'ū-lā'tor, n.
n. [Lat. speculator, Fr. spéculateur, Sp. especulador, It. speculatore, specolatore.]
Sense 1. One who speculates or forms theories.
In the earlier part of the seventeenth century, a speculator who had dared to affirm that the human soul is by nature immortal. Macaulay.
Sense 2. An observer; a contemplator. [Obs.] Browne.
Sense 3. A spy; a watcher. [Obs.] Broome.
Sense 4. (Com.) One who buys goods, land, or other things, with the expectation of a rise of price, and of deriving profit from such advance.