To encumber with a literal or figurative burden.
To impose, as a load or burden; to lay or place as a burden (something heavy or objectionable).
A phrase or theme that recurs at the end of each verse in a folk song or ballad.
The proportion of ore and flux to fuel, in the charge of a blast furnace.
The capacity of a vessel, or the weight of cargo that she will carry.
A responsibility, onus.
The tops or heads of stream-work which lie over the stream of tin.
A fixed quantity of certain commodities.
Theme, core idea.
The drone of a bagpipe.
A cause of worry; that which is grievous, wearisome, or oppressive.
The total amount of toxins, parasites, cancer cells, plaque or similar present in an organism.
A heavy load.
To encourage, urge or incite.
To increase the activity of (a catalyst) by changing its surface structure.
To elevate to a higher league.
To raise (someone) to a more important, responsible, or remunerative job or rank.
To move on to a subsequent stage of education.
To advocate or urge on behalf of (something or someone); to attempt to popularize or sell by means of advertising or publicity.
To exchange (a pawn) for a queen or other piece when it reaches the eighth rank.