Monopod

Another neat device is a kind of monopod (if we may coin a word), which is adjusted against the hub of the wheel by means of a Y-top, and has adjustable extension to reach to the ground. This sliding brass foot telescopes and shuts up into a length of only about sixteen inches, making a very effective means of turning the bicycle into a rigid camera stand.

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Vnto what end like wiſe ſhould I ſpeak of thoſe blind Andabates that fight without eyes, or of thoſe great eared people the Faneſii, whoſe ears ſhadowed and couered their whole body? or of the Monopods, which in like manner ſhadow their whole body with one foote?

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Hence their ſacred Tables, ſome placed before the Images of their Gods in their Temples (as mention’d. Iſai. 65. 11. Ezek. 23. 41) and ſome ſet up for Libations, and other Idolatrous Uſes, in their Houſes: ſome call’d Tripods, with three Feet, ſome Tetrapods, with four; and ſome Monopods with one, in Manner of a Pillar:[…].

Source: wiktionary

The next order of walkers amongst apodous larvæ are those that move by means of fleshy tuberculiform or pediform prominences,—which last resemble the spurious legs of the caterpillars of most Lepidoptera. Some, a kind of monopods, have only one of such prominences, which being always fixed almost under the head, may serve, in some degree, the purpose of an unguiform mandible.

Source: wiktionary