Definition of "delt"

[…] she had this tat of a devil face sticking out a Gene Simmons-class tongue on her left delt.

2005, F. Paul Wilson, Midnight Mass, page 67

Here now they cry out, that the Commaunders of our Fleete haue delt iniuriously with them, they exclaime that the leagues are broken, that their old priuiledges in England are violated, which they chalenge to belong to their Cities, and ought to be kept and mainteined.

1589, anonymous author, A Declaration of the Causes, which mooved the chiefe Commanders of the Nauie of her most excellent Maiestie the Queene of England, in their voyage and expedition for Portingal, to take and arrest in the mouth of the Riuer of Lisbone, certaine Shippes of corne and other prouisions of warre bound for the said Citie‎

PHILOMATHES. Indeede there is cause inough, but rather to leaue him at all, then to runne more plainlie to him, if they were wise he delt with.

1597, King James I, Daemonologie.‎