At a slant; obliquely.
Obliquely over or across: lay the paddle aslant the gunwales.
- at a slant
From Middle English aslant (“at an angle, in a curve; from the side, deviously”), from "on slante"; equivalent to a- + slant
- After wildly circling about, and reaching a height at which it appears a mere speck, where it winnows a random zigzag course, it abruptly shoots downwards and aslant, and then as abruptly stops to regain its former elevation, and this process it repeats many times.