i Register
In some senses, protrude is marked as obsolete. Watch for register when choosing this word.
verb
To extend from, above or beyond a surface or boundary; to bulge outward; to stick out.
The old woman's face was wrinkled; her two remaining teeth protruded over her under lip; and her eyes were bright and piercing.
A sheaf of papers was held in his shirt pocket by a little fence of fountain pens and yellow pencils; and from his hip pocket protruded a notebook with metal covers.
To cause to extend from a surface or boundary; to cause to stick out.
With thoſe that ſtretcht along the Weſtern Coaſt; / To whom the old Creonian Towns were loſt, / Where high Epidium midſt th' Hibernian Waves, / Protrudes his Head, and all their Monſters braves.
Before me soared the great promontory of Penmaen Mawr, protruding itself into the sea […]
To cause to extend from a surface or boundary; to cause to stick out.
He, when young Spring protrudes the bursting gems, / Marks the first bud, and sucks the healthful gale / Into his freshen'd soul; […]
Mr. Hawley's disgust at the notion of the "Pioneer" being edited by an emissary, and of Brooke becoming actively political—as if a tortoise of desultory pursuits should protrude its small head ambitiously and become rampant—was hardly equal to the annoyance felt by some members of Mr. Brooke's own family.
To thrust forward; to drive or force along.
1566, William Painter, The Palace of Pleasure, London: Richard Tottell and William Jones, Volume 1, The .xlj. Nouell, […] ye people standyng round about […] cried out, incontinently for the deliuerie of the Ladie, & for vengeaunce to be taken of hym, whiche so wickedly had protruded her into that daunger:
[…] Palſies doe oftneſt happen upon the left ſide, if underſtood in this ſense; the moſt vigorous part protecting it ſelf, and protruding the matter upon the weaker and leſſe reſiſtive ſide.