Parsing inflected forms may not always work as expected. If the following does not give the correct word, try Latin Words or Perseus.
* at-torqueo, ēre, v. a., to hurl or swing upward (ad designating direction upward, as in assurgo, attollo; cf. ad init.): jaculum attorquens emittit in auras, Verg. A. 9, 52.