1 tr. cause (a person) to laugh or smile.
2 tr. & refl. (often foll. by with, by) interest or occupy; keep (a person) entertained.
Derivatives:
amusing adj. amusingly adv.
Etymology: ME f. OF amuser cause to muse (see MUSE(2)) f. causal a to + muser stare
Useful english dictionary. 2012.