The phrase "a large slit" is correct and usable in written English.
It can be used to describe a significant opening or cut in a material or surface.
Example: "The fabric had a large slit that made it easy to move around."
Alternatives: "a wide opening" or "a big cut".
Or the portrait of the bodybuilder Sharon Marvel wearing only a sheer silk top with a large slit straight down the middle and black stiletto heels at the base of hard-as-steel, vein-popping legs?
The body of the restrainer had several small slits and the back end had a large slit, allowing for olfactory and tactile communication between rats.
To keep a door knob from smashing into and damaging an interior wall, cut a large slit in a tennis ball and slide it over the knob.
Cut a large slit down one side of the box to make a door, but make sure to not cut down the whole side or else the box will be too flimsy.
We observe a maximum of RF = 12 in the large slit and only RF = 7 in the smaller 0.6-mm conduit.
Large slit drums are sometimes less precisely called slit gongs.
The vertical angular acceptance of the mirror was doubled to allow double-slit interferometry with large slit separation (>12 mm).
Moreover, the rGO/Au flakes standing in vertical directions formed small vacancies in between, as in a nanomesh42, which suppressed the unexpected generation of large slits and made the contact nodes more stable even under 50% strain.
I cut large slits in both bottom sides of each (big enough for a child to easily unbelt the "rack" when the seat is needed for a friend) and belted both the box and the basket snugly against the seat.
Some sewer grates have large slits parallel to the road, and sufficiently large enough for a road bike wheel to fall through.
Lay top crust on, then fold overhang up to make a thick rim around pie. Brush with milk, sprinkle with coarse sugar, and cut at least six large slits in top crust.
