What is the meaning of Speculare?

mirror; specular

to speculate [+ su (object) = about] [auxiliary avere]

to speculate [+ su (object) = on] [auxiliary avere]

to profit from, to take advantage of, to exploit [+ su (object)] [auxiliary avere]

to inquire philosophically into, to investigate philosophically, to speculate about (a subject)

second-person singular present active imperative/indicative of speculor

speculation

Source: wiktionary.org