Thank you for asking for 28d..... If 30a is infall which my dictionary says is a junction then the answer to 28 d seems to be alod ( same as allodium) or aled ( Jones?) but its a bit tricky without the clue.
Tks K for your explanation; I am not sure but was relying on Chambers 11th edition
" infall - an inroad; a falling in; a confluence, inlet or junction. The f is still a little odd unless it's the middle of traffic.