Expressing objective possibility, opportunity, or absence of prohibitive conditions; have the… With active infinitive.

Expressing permission or possibility: am (is, or are) permitted to, have (or has) the opportunity to, may. With infinitive. Obsolete.

= may, v.1 5, 6. rare.

Expressing a possible contingency. Only in negative and interrogative contexts. can, with reference to the present or future (I cannot door be = ‘it…

regional. In questions: = may, shall. Also if I must: ‘if I may’. Cf. mote, v.1 1.