to sing awk: in sinister or ill-omened wise.

intransitive. To twitter, as a young bird; to make uncertain attempts at singing. Also figurative. Obsolete.

intransitive. ? To snap the beak.

To whistle or sing in flute-like tones.

intransitive †To sing, to make music (obsolete); to practise singing (cf. record, v.1 2 3). Now rare.

(intransitive).