Definition of "writhled"

It cannot be, this weak and writhled shrimp / Should strike such terror to his enemies.

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 II, scene iii]

Her writhled skin, as rough as maple rind

1590, Edmund Spenser, “Book I, Canto IX”, in The Faerie Queene. […], London: […] [John Wolfe] for William Ponsonbie, stanza 47

Cold, writhled eld, his lives-wet almost spent.

1598, John Marston, fourth Satire, b.i.