Definition of "gleek"

Lady Loadstone: Laugh, and keep company, at gleek or crimp. / Mistress Polish: Your ladyship says right, crimp sure will cure her.

1640, Ben Jonson, The Magnetick Lady, or, Hvmors Reconcil'd, act 2, scene 4

Where's the Baſtards braues, and Charles his glikes: What all amort?

1591 (date written), William Shakespeare, “The First Part of Henry the Sixt”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act III, scene ii]

A pretty gleek coming from Pallas' eye:

1623 (first performance), John Fletcher, William Rowley, “The Maid in the Mill”, in Comedies and Tragedies […], London: […] Humphrey Robinson, […], and for Humphrey Moseley […], published 1647, Act II, scene ii

I have seen you gleeking and / galling at this gentleman twice or thrice.

1599, William Shakespeare, “The Life of Henry the Fift”, in Mr. William Shakespeares Comedies, Histories, & Tragedies […] (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act V, scene i]

[…] that ſome honeſt neighbours will not make them friends. Nay, I can gleeke vpon occaſion.

c. 1595–1596 (date written), William Shakespeare, “A Midsommer Nights Dreame”, in Mr. William Shakespeares Comedies, Histories, & Tragedies: Published According to the True Originall Copies (First Folio), London: […] Isaac Iaggard, and Ed[ward] Blount, published 1623, [Act III, scene i]

i just push the tip of my tongue against the roof of my mouth and saliva squirts out in a groovy little arc. i think you'd really have to see it to know what i am talking about. but you can gleek best right after chewing big red gum.

1999 October 18, Gem, “what can you wiggle?”, in alt.music.soulcoughing (Usenet)

My buddy can gleek (thats what he called it too) but he used highly pressured spit forced out between two teeth with his tounge to do it.

1999 November 15, THAT antix GUY, “the weird personal info”, in alt.rave (Usenet)

I used to be able to gleek "by accident" every now and then, but I couldn't figure out how to do it deliberately.

2002 July 21, Sean Wilkinson, “Can you gleek?”, in rec.sport.pro-wrestling (Usenet)