Н171
ЛЁГОК (ЛЁГКИЙ) НА НОГУСКОР (СКОРЫЙ) НА НОГУ all
collAdjPsubj-compl with copula,
subj:
human (all variants) or
modif (variants with long-form
Adj)
fixed WO (variants with short-form
Adj)) one walks (or, occas., runs) with a spirited step, quickly, and can keep going for a long time without tiring
X легок на ногу = X is light on his feet
X is light-footed (nimble-footed).