■ verb
1》 be or remain hidden so as to wait in ambush.
2》 be present in a latent or barely discernible state.
↘ informal read the postings on an online forum without contributing any messages.
■ noun Austral./NZ informal a dodge or scheme.
Derivatives
~er noun
Origin
ME: perh. from lour + the frequentative suffix -k (as in talk ).