1. [adv]  at an oblique angle; "the sun shone aslant into his face"
2. [adv]  over or across in a slanting direction
3. [adj]  having an oblique or slanted direction

ASLANT is a 6 letter word that starts with A.

1. \A*slant"\, adv. & a. [Pref. a- + slant.]
   Toward one side; in a slanting direction; obliquely.
         [The shaft] drove through his neck aslant. --Dryden.
   

2. \A*slant"\, prep.
   In a slanting direction over; athwart.
         There is a willow grows aslant a brook.  --Shak.