-ol
definition: A suffix denoting that the substance in the name of which it appears belongs to the series of alcohols or hydroxyl derivatives
As carbinol glycerol etc.
-ol is a 3 letter word that begins with a - and ends in an L

-or
definition: A noun suffix denoting an act; a state or quality; as in error
Fervor pallor candor etc.
-or is a 3 letter word that begins with a - and ends in an R

-or
definition: A noun suffix denoting an agent or doer; as in auditor
One who hears; donor one who gives; obligor elevator. It is correlative to -ee. In general -or is appended to words of Latin and -er to those of English origin. See -er.
-or is a 3 letter word that begins with a - and ends in an R

O's (pl)
definition: of O

O's is a 3 letter word that begins with an O and ends in an S

Oad (n.)
definition: See Woad.

Oad is a 3 letter word that begins with an O and ends in a D

Oaf (n.)
definition: Originally
An elf's child; a changeling left by fairies or goblins; hence a deformed or foolish child; a simpleton; an idiot.
Oaf is a 3 letter word that begins with an O and ends in a F

Oak (n.)
definition: Any tree or shrub of the genus Quercus. The oaks have alternate leaves
Often variously lobed and staminate flowers in catkins. The fruit is a smooth nut called an acorn which is more or less inclosed in a scaly involucre called the cup or cupule. There are now recognized about three hundred species of which nearly fifty occur in the United States the rest in Europe Asia, and the other parts of North America, a very few barely reaching the northern parts of South America and Africa. Many of the oaks form forest trees of grand proportions and live many centuries. The wood is usually hard and tough, and provided with conspicuous medullary rays, forming the silver grain.
Oak is a 3 letter word that begins with an O and ends in a K

Oak (n.)
definition: The strong wood or timber of the oak.

Oak is a 3 letter word that begins with an O and ends in a K

Oar (n))
definition: An implement for impelling a boat
Being a slender piece of timber usually ash or spruce with a grip or handle at one end and a broad blade at the other. The part which rests in the rowlock is called the loom.
Oar is a 3 letter word that begins with an O and ends in an R

Oar (n))
definition: An oarlike swimming organ of various invertebrates.

Oar is a 3 letter word that begins with an O and ends in an R

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