S1I1N1G2L1E1T1R1E1E1
11 points
SINGLETREE is validvalid
the crosspiece of a carriage to which harnesses are attached, also SWINGLETREE, SWINGTREE, WHIFFLETREE, WHIPPLETREE
the crosspiece of a carriage to which harnesses are attached, also SWINGLETREE, SWINGTREE, WHIFFLETREE, WHIPPLETREE