WHIPPLETREE is validvalid

[n WHIPPLETREES]

163,606 of 196,601 in NWL2023·also valid in CSW24

the crosspiece of a carriage, plough, etc., which is made so as to swing on a pivot and to which the traces of a harnessed animal are fixed, also SINGLETREE, SWINGLETREE, SWINGTREE, WHIFFLETREE [n -S]