(1):

(v. t.) To gain a slight taste of; to acquire a slight, superficial knowledge of; to smack.

(2):

(v. t.) To talk superficially about.

(3):

(v. i.) To have a slight taste, or a slight, superficial knowledge, of anything; to smack.

(4):

(v. i.) To talk superficially or ignorantly; to babble; to chatter.

(5):

(n.) Superficial knowledge; a smattering.